277:(MOH) issues time sensitive anonymous temporary IDs that are used to identify the patient to all third parties. When two users of the app pass by, it uses the Bluetooth Relative Signal Strength Indicator (RSSI) readings between devices across time to approximate the proximity and duration of an encounter between two users. This proximity and duration information is stored on one's phone for 25 days on a rolling basis. Once a user tests positive for infection, the MOH works with them to map out their activity for past 14 days and requests the contact log. To facilitate the conduct of contact tracing measure to prevent further outbreak of any infectious disease, the user cannot withhold their contact information log under the Infectious Diseases Act (Chapter 137).
442:
414:
87:
382:
304:, the developers announced that they had been working with Apple and Google on specifications which would allow for cross-border inter-operability, and had begun to incorporate these new APIs into TraceTogether. The developers envisaged this as a way to overcome the app's inability to access full background Bluetooth scanning functionality on iOS devices (which led to the app being active only when it ran in the foreground), and increase the pool of interoperable devices, both of which could have increased the contact tracing utility.
266:. The website states that the NRIC number was required in order to allow MOH to reach the right person when they need to give important health advice on COVID-19, and was stored in a secure server, never accessed unless needed for contact tracing, and never shared with other app users. The main goal of SafeEntry helps COVID-19 cases remember the places that they've visited. This helps MOH to identify potential infection clusters and perform cluster COVID-19 testing.
457:(TT-only SE) has been made mandatory for all Singaporeans and at all places such as cinemas, restaurants, workplaces, schools and shopping malls for contact tracing purposes. This includes the device called SafeEntry Gateway (Check in and check out) to enable users to scan in and out. In addition, TraceTogether also shows vaccination status and pre-event testing (PET) status whether the person test positive or negative for COVID-19.
29:
425:
for a day on 28 October 2020 to rework the distribution strategy. The collection of the token at the community centres could only be made by residents in the respective constituencies, and distribution was done on a rolling basis at the constituency level, with the last remaining community centres reopened for collection only on 23 December 2020. A
373:
positive during quarantine period, the percentage may be low due to
Singapore mandating mask-wearing since 14 April 2020. It was reported on 22 April 2021 that TraceTogether system had identified at least 75 persons who had to be placed under quarantine, but would likely not have been picked up through a manual contact tracing process.
320:, citing its inability to "identify how, when and whom the person was infected by or passed the infection to" and "the 'graph' not being available to the contact tracers". Instead, a new portable, wearable device, called the TraceTogether Token would be issued to all 5.7 million residents in order to increase the pool of participants.
394:
workplace restriction. The physical token helps to increase the optimal number of users required for the contact tracing system to work well, which was 75% of the population. With the issuance of the device, the government aimed to achieve at least 70% of the population using either the TraceTogether Token or app.
359:
As of 14 December 2020, following the release of the token, adoption rate of the app and token combined exceeded 60% of
Singapore's resident population. Despite falling short of the 70% adoption target that the Government had set loosen restrictions, the Government later announced on the same day the
216:
The app has raised significant concerns about the privacy of those who use the app, especially due to a lack of decentralised report processing and access to the data by police. However, the app states it has several features to ensure users' privacy, such as regularly rotating users' IDs and storing
531:
Stores limited data. Data over 25 days old is deleted automatically. When signing up, a random User ID is generated and associated with the mobile number. Both the mobile number and User ID are stored in a secure government server. All data from or about other phones will not be accessed, unless the
424:
A 26 October 2020 report indicated that there was a higher than expected demand after the news of mandatory usage of TraceTogether was released. Authorities also did not expect that residents would travel to different distribution points island-wide to collect the tokens and had suspended collection
2965:
BaumgĂ€rtner, Lars; Dmitrienko, Alexandra; Freisleben, Bernd; Gruler, Alexander; Höchst, Jonas; KĂŒhlberg, Joshua; Mezini, Mira; Mitev, Richard; Miettinen, Markus; Muhamedagic, Anel; Thien Duc Nguyen; Penning, Alvar; Dermot
Frederik Pustelnik; Roos, Filipp; Sadeghi, Ahmad-Reza; Schwarz, Michael; Uhl,
510:
The distribution of the tokens was scaled back from 1 July 2022 as the demand for the token fell. On 9 February 2023, authorities announced that the system was no longer required. The public was encouraged to return the tokens at the community centres in a month-long exercise from 13 February 2023.
489:
subsequently issued a statement that "cruise lines should adhere to the guidance from the MOH and the SNDGO regarding the use of data from the TraceTogether app", while the cruise companies reversed or changed the ban to an advisory "encouraging" affected passengers to postpone their sailing dates.
679:
on 2 February 2021 formalising the assurances to restrict police access to investigate for seven categories of offences. Additionally, only senior police officers with the rank of inspector and above can request for data in the TraceTogether system, similarly to existing data requests requirements
652:
Following the announcement, some users deleted the app or left the token at home, while others disabled their phone's
Bluetooth or selected the âPause Trackingâ function after checking in. In the month of the disclosure (January 2021), 350 people requested that their contact tracing data be erased
280:
The usage of the app had been limited by the technical limitations of needing to have the application to run in the foreground on iOS devices, and battery drain, but these problems had been reportedly addressed in the 2.1 version of the app released on 3 July 2020, and version 2.1.3 of 5 Aug added
429:
editor, Irene Tham advocated on 30 October 2020 for the tokens to be distributed first and mandate the usage later. Tham also suggested a similar queue system to that of telcos registering customers and assigning time slots could be adopted to avoid overcrowding at the collection points as it was
405:
Similar to the app, the TraceTogether Token utilises BlueTooth to exchange signals with other TraceTogether Tokens or the mobile app. After encrypting the data of what devices or apps are near by, the device stores up to 25 days of information before deletion. The device is designed for those who
363:
On 11 May 2021, Balakrishnan revealed that the adoption rate had exceeded 92%, with 4,923,054 individuals aged above six. On 19 January 2022, the Smart Nation and
Digital Government Office indicated that "almost all of Singapore's population above the age of six" are using the system. There were
315:
acknowledged in
Parliament the inability of the TraceTogether app to work well particularly on iOS or Apple devices, and that these had not been overcome despite discussions at the technical and policy level with Apple. He subsequently explained that the Government had decided against using the
659:
Various officials provided reassurances. Balakrishnan explained that this situation was not unique to TraceTogether and that under the same law, other forms of sensitive data like phone or banking records could also have their privacy regulations overruled. Desmond Tan emphasised that access to
484:
were reported to have denied entry to students and passengers whose TraceTogether app displayed "possible exposure", despite the
Ministry of Health (MOH) affirming that such persons were at low risk and not restricted from continuing with their regular activities. This was effected by requiring
406:
have no smartphone, which consisted of about 5% of the population. It is designed to be waterproof and its battery life is about six months. There are no physical buttons on the device, and it has a green/red light indicator for battery life and/or to indicate a fault. The device does not have
372:
With TraceTogether complementing manual contact tracing effort, the contact tracing teams has improved their efficiency by reducing the time taken to identify and quarantine a close contact from four days to less than two days. More than 10% of close contacts identified by TraceTogether turned
212:
Released on 20 March 2020, the system initially consisted only of an app by the same name. However, this was later supplemented by a physical token mainly intended for elderly and children who may not own a smartphone, or those who prefer not to use the app. The app was the first main COVID-19
393:
announced that the government would be distributing a physical device, named TraceTogether Token, to augment the app. The TraceTogether Token is designed primarily to support
Singapore residents who do not own a smartphone, mainly some elderly, children aged seven and above or residents with
639:
There was significant backlash to the announcement, despite
Balakrishnan's explanation and acceptance of full responsibility. Some observers attributed this to the fact that the clarification was made 9 months after the data had already been used, and only in response to direct and repeated
594:, which contradicted previous assurances by Minister Balakrishnan and others that the data would be used only for contact tracing. This disclosure followed investigations triggered by an inquiry from a member of the public in October 2020, and the filing of a parliamentary question by MP
648:
saying that "the news came across as the
Government backtracking on its earlier assurance that TraceTogether would only be used for contact tracing" and "clearly undermines their trust and credibility, and could undermine its future efforts .... to keep COVID-19 under control".
217:
limited data. Despite the concerns over privacy, the app was slowly adopted by the population of the Singapore, eventually reaching a 92% adoption rate in May 2021. The app was now mandated for specific groups of people and those attempting to enter certain venues and events.
269:
Following installation, the user is requested to grant relevant permissions such as Bluetooth. Android users are additionally required to grant Location permission as Bluetooth can be used to derive location information when combined with beacons in fixed locations.
506:
was lowered from orange state to yellow state on 26 April 2022. Additionally, the usage of TraceTogether system would be limited to large events with 500 participants, food and beverages outlets, and nightlife entertainment establishments with dancing facilities.
523:
protocol is designed to preserve the privacy of users, but in contrast to other implementations, the TraceTogether app is not anonymous as participants have to register using their phone number and national registration number or other evidence of residency.
345:, a co-chair of the multi-ministry Covid task force, explained that for TraceTogether to be effective, at least three-quarters â if not everyone â of the population had to install it, and had to turn on their Bluetooth function to ensure the app was running.
664:, who said that the police will restrict the use of TraceTogether to "very serious offences" like murder and terrorism, only after careful consideration and discretion. In addition, Balakrishnan said that TraceTogether programme will be stood down once the
622:
investigation, where the police tried to but failed to obtain the TraceTogether data from the suspect Surajsrikan Diwakar Mani Tripathi, who did not install the app in his phone. In the aftermath, Surajsrikan was found guilty of murder and sentenced to
1218:
348:
On 10 April 2020, approximately 3 weeks after its release, about one million people had downloaded the app, which translated to about one in six of the resident population at the time. This percentage increased to 17% of the population in May 2020.
243:, which allows for a distributed approach whereby participating devices exchange proximity information whenever an app detects another device with the TraceTogether app installed. The protocol, and reference app implementations of it, were also
397:
Upon the announcement of the physical device, there was a public backlash against the physical device initiative, with a petition launched to protest against the development of the device over concerns about potential privacy issues. The
352:
On 5 June 2020, the Minister-in-charge of the Smart Nation Initiative announced in Parliament that the TraceTogether has been downloaded on a voluntary basis by 1.5 million users, which worked out to only 25 per cent of the population.
1300:
554:
is due to the use of centralised report processing, in which a user must upload their entire contact log to a health authority administered server. This is in contradistinction to decentralised report processing protocols such as the
606:
On 5 January 2021, Minister Balakrishnan updated Parliament that the police had to the best of his knowledge by that point in time accessed contact tracing data once in the case of a murder investigation. Following questions from
1776:
535:
Does not collect data about location via GPS or Wi-Fi, however fine-grained location tracking is possible using Bluetooth. TraceTogether uses Bluetooth to approximate distance to other nearby phones running the same
1681:
1210:
3688:
2709:
1034:
3404:
2614:
1278:
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Allows consent revoking via an email to a government agency. If a user opts out, their contact information is deleted from the MOH servers, meaning any log entries they appear can no longer be matched to
2215:
2275:
2184:
1591:
2743:
1873:
511:
The TraceTogether app (as well as SafeEntry app) could be uninstalled from handphones as well. Authorities had also announced that the data collected through the system was deleted from their servers.
3624:
3373:
2523:
1465:
3526:
2584:
1746:
969:
2678:
2055:
3594:
3260:
2085:
2245:
1000:
3655:
3320:
3097:
1338:
759:
1903:
1067:
3160:
1621:
3557:
3290:
2645:
1993:
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Singapore's reversal of initial promises regarding police access to TraceTogether data was cited as one of the reasons for resistance to the Hong Kong's COVID-19 contact-tracing application,
327:
crowned TraceTogether as the Asia-Pacific winner for its 2020 Government Eye on Innovation award, after the firm had conducted a poll among various government organisations around the world.
2151:
364:
about 3,000 users, or 0.056% of the registered users, who deregistered for reasons such as expats leaving the country, people who have died, or people opting out over data security reasons.
2369:
2553:
3229:
3028:
1806:
938:
3434:
692:(PSP), with members from opposition WP preferring not to use the data but support a bill to restrict, and PSP opposing the use of data. The Bill was passed by the end of the session.
2024:
2336:
2995:
1962:
3195:
1768:
1842:
1098:
877:
2844:
2120:
3059:
1704:
1673:
1128:
485:
customers to show the âCovid Health Statusâ section of the app or the âhistoryâ tab, despite the app data being originally intended only for personal reference. The
1498:
3695:
2910:
2701:
1026:
430:
noted that a crowd formed and lasted for a couple of hours at Marsiling Community Centre for a couple of hours even after that distribution strategy was reworked.
3396:
3342:
2606:
1929:
1270:
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in early December 2020, with the 3-month delay attributed to deliberations over the possibility of excluding TraceTogether data from the Criminal Procedure Code.
1553:
2207:
1188:
2735:
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2176:
1583:
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1865:
3735:
3730:
3725:
3720:
3616:
2515:
1457:
3518:
2576:
1738:
961:
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2047:
1525:
220:
On 9 February 2023, the system was deactivated after the authorities determined that the system was no longer required and closed down on 10 January 2024.
3586:
3252:
2077:
205:. The system helps in identifying contacts such as strangers encountered in public one would not otherwise be able to identify or remember. Together with
2237:
992:
433:
The distribution strategy would subsequently be changed from manned counter operations to token dispensing vending machines from 31 August 2021 onwards.
3647:
3312:
3089:
1330:
751:
1895:
1059:
556:
3152:
2637:
1613:
3549:
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1985:
2485:
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3130:
2143:
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1651:
1429:
1398:
1248:
1158:
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3712:
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1798:
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loosening of restrictions to start from 28 December 2020. On 23 December 2020, Balakrishnan revealed that the adoption rate had exceeded 70%.
2869:
656:
The original TraceTogether privacy statement was updated on 4 January 2021 to include possible access by police officers for investigations.
562:
In Parliament on 2 February 2021, it was revealed that the police could request the data after 25 days under certain unspecified exceptions.
339:
3426:
2305:
3812:
848:
2016:
2328:
503:
461:
3464:
2987:
2943:
1368:
3792:
2459:
2429:
2399:
1954:
3187:
1834:
1090:
869:
201:. The main goal was a quick identification of persons who may have come into close contact with anyone who has tested positive for
820:
3832:
3681:
2112:
2516:"TraceTogether token vending machines to gradually replace physical booths; home delivery service launched for first-time users"
3822:
3495:
3051:
618:, Minister Desmond Tan explained in Parliament on 2 February 2021 that this had happened in May 2020 during the course of the
258:
Initial versions of the app required users to register using only their mobile number, since 7 April 2020, it requires users'
611:
2845:"No masks on public transport, free vaccines: 6 things you need to know as S'pore lifts Covid-19 rules | The Straits Times"
608:
576:
1120:
1490:
259:
2899:
1554:"Contact-tracing device will not track location; people can use TraceTogether if they prefer, says Vivian Balakrishnan"
213:
tracking app released in the world and its development encouraged the development of similar apps in other countries.
3761:
1180:
1799:"Low community prevalence of COVID-19, 0.03% of people with acute respiratory infection test positive: Gan Kim Yong"
3797:
138:
2177:"New TraceTogether token to have no GPS or internet connectivity to track user's whereabouts: Vivian Balakrishnan"
527:
To safeguard participant's mutual privacy and ensuring their control over the data, TraceTogether states that it:
2607:"Use of TraceTogether app or token to be made compulsory for people attending large events, high-risk activities"
2422:"TraceTogether Token collection at community centres to be restricted to residents within the constituency only"
1521:
3704:
1835:"TraceTogether adoption up to more than 60% as privacy concerns wane; users still bothered about battery drain"
669:
641:
294:
274:
198:
2362:"TraceTogether token collection suspended for a day, to be distributed one constituency at a time from Oct 29"
441:
356:
By 4 September 2020, about 2.4 million users had downloaded the app, with 1.4 million active users in August.
1211:"How do TraceTogether and SafeEntry work together? Is SafeEntry still required since there is TraceTogether?"
685:
477:
3802:
3253:"Police can only ask for TraceTogether data through person involved in criminal probe: Vivian Balakrishnan"
290:
68:
41:
931:"Singapore to open-source national Coronavirus encounter-tracing app and the Bluetooth research behind it"
3397:"Some TraceTogether users upset with Govt's revelation on police access to data, say they'll use it less"
399:
52:
3122:
2702:"Students of driving school turned away as TraceTogether records show close proximity to Covid-19 cases"
2298:"'High demand' for TraceTogether tokens at collection centres, S'poreans advised not to rush to collect"
1643:
499:
119:
1394:
330:
With the discontinuation of the system, the app has been removed from all official mobile app stores.
209:, it allows the identification of specific locations where a spread between close contacts may occur.
1930:"Nearly all in Singapore are on Covid-19 contact tracing programme TraceTogether | The Straits Times"
1240:
1150:
680:
for bank data from financial institutions. The Bill was debated among the Members of Parliament from
591:
413:
2766:"COVID: No more group-size limits, safe distancing in Singapore, as DORSCON level lowered to yellow"
402:
also released a statement regarding the privacy concerns and about the potential abuse of the data.
1705:"TraceTogether, SafeEntry discontinued; personal contact tracing data relating to Covid-19 deleted"
907:
689:
681:
579:
481:
202:
3343:"Punggol Field murder: Man, 22, gets life term, caning for stabbing jogger in 'senseless' killing"
1769:"Only 17% of Singapore population downloaded TraceTogether app, experts urge to make it mandatory"
2297:
583:
532:
user has been in close contact with a COVID-19 case and is contacted by the contact tracing team.
486:
190:
143:
3807:
3090:"Singapore Police Force can obtain TraceTogether data for criminal investigations: Desmond Tan"
2898:
Bay, Jason; Kek, Joel; Tan, Alvin; Chai, Sheng Hau; Lai, Yongquan; Tan, Janice; Tang, Anh Quy.
587:
2900:"BlueTrace: A privacy-preserving protocol for community-driven contact tracing across borders"
3817:
317:
301:
2736:"TraceTogether data should not be used to grant or deny access to premises, say authorities"
473:
460:
All other methods of checking in through SafeEntry such as either the phone camera, NRIC or
3519:"Police will restrict use of TraceTogether data to 'very serious offences', says Shanmugam"
2935:
1360:
660:
TraceTogether data remained restricted without authorisation. This point was reiterated by
619:
595:
2451:
2421:
2391:
1896:"70% of Singapore residents participating in TraceTogether programme: Vivian Balakrishnan"
445:
An automatic self-check-in station at Paya Lebar Square requiring the use of TraceTogether
86:
8:
2208:"Covid-19 contact tracing device will not be an electronic tag, to be rolled out in June"
993:"Less than half in Singapore willing to share COVID-19 results with contact tracing tech"
628:
390:
312:
2966:
Christian (2020). "Mind the GAP: Security & Privacy Risks of Contact Tracing Apps".
2452:"TraceTogether Adoption Surpasses 70% CCs to Re-open For Token Collection Progressively"
1674:"Gartner announces winners of the 2020 Government Eye on Innovation Award press release"
3827:
2967:
1866:"Singapore to enter phase 3 on Dec 28: Groups of 8 to be allowed for social gatherings"
1739:"Coronavirus: S'pore contact tracing app now open-sourced, 1 in 5 here have downloaded"
962:"Coronavirus: S'pore contact tracing app now open-sourced, 1 in 5 here have downloaded"
812:
794:
782:
752:"Singapore launches TraceTogether mobile app to boost COVID-19 contact tracing efforts"
653:
from the government's servers, with the number increasing to more than 1,100 by April.
640:
parliamentary questioning. Privacy concerns were raised by various experts with former
289:
The app was released on 20 March 2020, following 8 weeks of development by Singapore's
2819:"Distribution of TraceTogether Tokens scaled back as demand falls | The Straits Times"
2546:"COVID-19: New app launched to help monitor and report migrant workers' health status"
1458:"Apple-Google contact tracing system not effective for Singapore: Vivian Balakrishnan"
1421:
381:
3313:"TraceTogether data was accessed in May 2020 for Punggol Fields murder investigation"
2793:"TraceTogether no longer required in most settings from April 26 | The Straits Times"
2638:"TraceTogether check-ins to be compulsory at public venues in S'pore by end-December"
2577:"All foreign workers have to download and activate TraceTogether app by June 19: MOM"
1712:
816:
665:
624:
426:
3587:"Bill restricting use of TraceTogether data for serious crimes passed by Parliament"
3550:"Recommended by Parliament: TraceTogether programme to be stood down after pandemic"
3617:"Hong Kong sees rush for burner phones as govt pushes Covid-19 contact-tracing app"
3487:
804:
154:
114:
2238:"TraceTogether tokens to be distributed free to all S'pore residents from Sept 14"
410:
functionality, and access to the data remains restricted among the civil service.
3673:
2268:"How to collect your free TraceTogether token: 5 things to know about the device"
551:
194:
2870:"COVID-19: MOH issues important TraceTogether token 'exercise' for Singaporeans"
3366:"Police's ability to use TraceTogether data raises questions on trust: Experts"
2017:"COVID-19: Compulsory to wear mask when leaving the house, says Lawrence Wong"
808:
421:
The physical device was made available for collection from 14 September 2020.
3786:
2144:"Getting buy-in for TraceTogether device and future Smart Nation initiatives"
1716:
1614:"TraceTogether programme wins international award for innovative use of tech"
1331:"Singapore to launch TraceTogether Token device for COVID-19 contact tracing"
696:
615:
342:
147:
2048:"TraceTogether-only SafeEntry required from Jun 1 at all higher-risk venues"
546:
Prompts disabling TraceTogether's functionality once contact tracing ceases.
308:
244:
3648:"Can law enforcers access data on Hong Kong Covid-19 contact-tracing app?"
1151:"How do I use the SafeEntry barcode feature within the TraceTogether app?"
3283:"Police will restrict use of TraceTogether data to very serious offences"
1027:"Tough decisions painful but necessary to save lives, says Lawrence Wong"
661:
77:
2486:"Distribute TraceTogether tokens first, mandate its use at venues later"
1584:"TraceTogether initiative wins global award for innovative use of tech"
645:
36:
3123:"Police may access TraceTogether data for investigations: Desmond Tan"
3766:
2964:
708:
520:
263:
252:
248:
240:
234:
206:
28:
3456:
3427:"350 people have asked for their contact tracing data to be deleted"
1308:
849:"More than 1,100 users have deregistered from TraceTogether: Vivian"
170:
2972:
2113:"Explainer: How the TraceTogether token works, where to collect it"
1522:"Resolving the $ 100 million TraceTogether dilemma â geraldgiam.sg"
1091:"Singapore updates contact tracing app to include foreign visitors"
799:
16:
Singapore's national contact tracing platform for COVID-19 pandemic
3153:"Singapore Police May Use Contact Tracing Data for Investigations"
2671:"Mandatory TraceTogether-only SafeEntry brought forward to May 17"
2392:"TraceTogether Tokens to be distributed at the constituency level"
601:
389:
On 7 June 2020, Minister-in-Charge of the Smart Nation Initiative
783:"The Evolving Ecosystem of COVID-19 Contact Tracing Applications"
467:
324:
3222:"Critical need to rebuild the public's trust in TraceTogether"
3021:"Critical need to rebuild the public's trust in TraceTogether"
1986:"Singapore App Halves Contact-Tracing Time, Top Engineer Says"
464:
app are all removed since the second lockdown on 17 May 2021.
300:
On 10 April 2020, following the lifting of the embargo on the
3188:"TraceTogether: Vivian regrets anxiety caused by his mistake"
1271:"Why does TraceTogether need Location Permission on Android?"
133:
Bengali, Burmese, Chinese, English, Hindi, Malay, Tamil, Thai
1060:"Singapore Rules Out Apple, Google's Contact-Tracing System"
570:
3488:"Singapore reveals Covid privacy data available to police"
2078:"Compulsory TraceTogether check-in from end December 2020"
417:
A TraceTogether token vending machine at Kitchener Complex
407:
159:
123:
899:
842:
840:
838:
727:
Refer to archived version of original privacy statement
2329:"Demand for TraceTogether tokens higher than expected"
1644:"Gartner Eye on Innovation Awards for Government 2020"
675:
The backlash prompted the Government to introduce the
835:
281:
informational, work pass and SafeEntry QR features.
436:
3703:
1955:"TraceTogether â Community-driven Contact Tracing"
1392:
557:Decentralized Privacy-Preserving Proximity Tracing
552:privacy concern relating to the BlueTrace protocol
3251:Ang, Hwee Min; Abdullah, Zhaki (5 January 2021).
781:Levy, Benjamin; Stewart, Matthew (30 July 2021).
586:that TraceTogether data could be accessed by the
565:
3784:
3052:"Privacy laws applied to the Government at last"
318:Google-Apple Exposure Notification (GAEN) system
302:Google-Apple Exposure Notification (GAEN) system
602:Access during the May 2020 murder investigation
677:COVID-19 (Temporary Measures) (Amendment) Bill
493:
468:Use by commercial organisations to deny access
307:On 5 June 2020, the Minister-in-charge of the
3689:
2729:
2727:
2015:Ang, Hwee Min; Phua, Rachel (14 April 2020).
472:In early May 2021, some businesses including
539:Creates temporary IDs that change regularly.
3250:
1485:
1483:
780:
262:or passport numbers, and added support for
3696:
3682:
2724:
2693:
2205:
504:Disease Outbreak Response System Condition
85:
3516:
3394:
3363:
2971:
2897:
1927:
1551:
1497:. Singapore Government. 1 February 2021.
1455:
1388:
1386:
959:
846:
798:
668:ends, with epidemiological data given to
449:Downloading, installing, registering the
323:On 7 December 2020, market research firm
3182:
3180:
3178:
1480:
1203:
571:Access under the Criminal Procedure Code
440:
412:
380:
189:was a digital system implemented by the
3117:
3115:
3015:
3013:
2014:
1702:
1020:
1018:
3785:
3581:
3579:
3577:
3575:
3485:
3215:
3213:
3083:
3081:
3079:
3077:
2665:
2663:
2278:from the original on 16 September 2020
2248:from the original on 25 September 2020
2141:
1923:
1921:
1564:from the original on 18 September 2020
1491:"Parliamentary Sitting on 5 June 2020"
1451:
1449:
1447:
1383:
1054:
1052:
590:for criminal investigations under the
376:
3677:
3658:from the original on 22 February 2021
3627:from the original on 21 February 2021
3467:from the original on 13 November 2020
3175:
3049:
2893:
2891:
2733:
2699:
2496:from the original on 24 November 2020
2479:
2477:
2462:from the original on 24 December 2020
2432:from the original on 24 December 2020
2402:from the original on 24 December 2020
2372:from the original on 23 December 2020
2356:
2354:
2339:from the original on 14 December 2020
2171:
2169:
2107:
2105:
2103:
2088:from the original on 10 December 2020
1876:from the original on 14 December 2020
1845:from the original on 14 December 2020
1828:
1826:
1824:
1809:from the original on 8 September 2020
1736:
1654:from the original on 21 November 2020
1547:
1545:
1543:
1432:from the original on 5 September 2021
1251:from the original on 5 September 2021
1024:
823:from the original on 3 September 2021
746:
744:
3645:
3597:from the original on 2 February 2021
3547:
3498:from the original on 8 February 2021
3437:from the original on 8 February 2021
3323:from the original on 3 February 2021
3293:from the original on 17 January 2021
3198:from the original on 2 February 2021
3112:
3062:from the original on 7 February 2021
3050:Ngiam, Shin Tung (11 January 2021).
3010:
2816:
2648:from the original on 22 October 2020
2635:
2617:from the original on 11 October 2020
2574:
2483:
2326:
2308:from the original on 18 January 2021
2187:from the original on 20 October 2020
2123:from the original on 14 October 2020
1996:from the original on 26 January 2021
1965:from the original on 15 January 2021
1928:Baharudin, Hariz (20 January 2022).
1832:
1761:
1749:from the original on 19 October 2020
1703:Mujibah, Fatimah (5 February 2024).
1684:from the original on 7 December 2020
1624:from the original on 7 December 2020
1594:from the original on 8 February 2021
1519:
1501:from the original on 8 February 2021
1468:from the original on 24 January 2021
1413:
1401:from the original on 8 February 2021
1393:Team TraceTogether (10 April 2020).
1281:from the original on 2 February 2021
1191:from the original on 6 February 2021
1131:from the original on 2 February 2021
1070:from the original on 7 February 2021
1015:
972:from the original on 19 October 2020
928:
864:
862:
239:The app utilises a custom protocol,
223:
3813:Android (operating system) software
3572:
3560:from the original on 6 January 2021
3529:from the original on 5 January 2021
3517:Baharudin, Hariz (5 January 2021).
3407:from the original on 8 January 2021
3395:Elangovan, Avene (7 January 2021).
3376:from the original on 5 January 2021
3364:Baharudin, Hariz (5 January 2021).
3263:from the original on 5 January 2021
3210:
3163:from the original on 4 January 2021
3133:from the original on 4 January 2021
3100:from the original on 4 January 2021
3074:
2842:
2790:
2660:
2526:from the original on 27 August 2021
2154:from the original on 5 October 2020
2045:
2039:
1983:
1918:
1906:from the original on 2 January 2021
1863:
1444:
1419:
1161:from the original on 28 August 2021
1049:
1003:from the original on 4 October 2020
284:
13:
3646:Wong, Natalie (17 February 2021).
3486:Illmer, Andreas (5 January 2021).
3345:. The New Paper. 15 September 2022
3232:from the original on 17 April 2021
3219:
3031:from the original on 17 April 2021
2936:"TraceTogether Privacy Safeguards"
2916:from the original on 20 April 2020
2888:
2599:
2474:
2351:
2320:
2166:
2100:
2058:from the original on 22 April 2021
2027:from the original on 21 April 2020
1833:Chew, Hui Min (14 December 2020).
1821:
1540:
1528:from the original on 18 March 2021
960:Baharudin, Hariz (10 April 2020).
941:from the original on 12 April 2020
910:from the original on 11 April 2020
762:from the original on 20 March 2020
741:
577:Minister of State for Home Affairs
453:app and scanning in/out using the
14:
3844:
3762:COVID-19 vaccination in Singapore
3087:
2988:"How can I stop sharing my data?"
2587:from the original on 16 June 2020
2218:from the original on 10 June 2020
1864:Lai, Linette (14 December 2020).
1456:Baharudin, Hariz (15 June 2020).
1371:from the original on 30 July 2020
1341:from the original on 17 June 2020
1101:from the original on 1 March 2021
1037:from the original on 5 March 2021
859:
340:Minister for National Development
3793:2020 establishments in Singapore
2998:from the original on 6 June 2020
2946:from the original on 30 May 2020
2681:from the original on 10 May 2021
2636:Wong, Lester (20 October 2020).
2556:from the original on 5 June 2020
2327:Wong, Lester (5 November 2020).
1779:from the original on 28 May 2020
1552:Baharudin, Hariz (8 June 2020).
1241:"How do I set up TraceTogether?"
1221:from the original on 13 May 2021
880:from the original on 31 May 2020
847:Baharudin, Hariz (11 May 2021).
437:Mandatory usage of TraceTogether
367:
27:
3639:
3609:
3548:Tham, Yuen-C (5 January 2021).
3541:
3510:
3479:
3449:
3419:
3388:
3357:
3335:
3305:
3275:
3244:
3145:
3043:
2980:
2958:
2928:
2862:
2836:
2810:
2784:
2758:
2746:from the original on 7 May 2021
2734:Chong, Charlotte (7 May 2021).
2712:from the original on 7 May 2021
2700:Chong, Charlotte (6 May 2021).
2629:
2568:
2538:
2508:
2484:Tham, Irene (30 October 2020).
2444:
2414:
2384:
2290:
2260:
2230:
2199:
2135:
2070:
2008:
1984:Lee, Yoolim (8 December 2020).
1977:
1947:
1888:
1857:
1791:
1730:
1696:
1666:
1636:
1606:
1576:
1513:
1353:
1323:
1293:
1263:
1233:
1173:
1143:
1113:
1082:
721:
644:and Associate Professor of Law
338:During the release of the app,
180:(Obsolete from 10 January 2024)
3833:COVID-19 pandemic in Singapore
3705:COVID-19 pandemic in Singapore
2791:Tan, Adeline (22 April 2022).
1737:Chong, Clara (10 April 2020).
1088:
990:
984:
953:
922:
892:
870:"How does TraceTogether work?"
774:
672:that does not identify users.
642:Nominated Member of Parliament
566:Controversy over police access
199:COVID-19 pandemic in Singapore
1:
3823:COVID-19 contact tracing apps
3220:Ho, Grace (3 February 2021).
2575:Wong, Lester (16 June 2020).
1520:Giam, Gerald (14 June 2020).
1025:Chong, Clara (1 April 2020).
734:
228:
2992:Government Technology Agency
2940:Government Technology Agency
2907:Government Technology Agency
2817:Auto, Hermes (1 July 2022).
1959:Government Technology Agency
1305:support.tracetogether.gov.sg
874:Government Technology Agency
634:
474:ComfortDelGro Driving Centre
455:TraceTogether-only SafeEntry
291:Government Technology Agency
42:Government Technology Agency
7:
2046:Low, Zoey (22 April 2021).
1397:. Government of Singapore.
787:Harvard Data Science Review
702:
494:Scale back and deactivation
197:efforts in response to the
10:
3849:
2206:hermesauto (8 June 2020).
514:
232:
3749:
3711:
1420:Bay, Jason (April 2020).
809:10.1162/99608f92.2660ce5a
333:
165:
153:
137:
129:
113:
96:
67:
63:
51:
47:
35:
26:
3757:Circuit breaker measures
3652:South China Morning Post
3461:www.tracetogether.gov.sg
3287:www.singaporelawwatch.sg
714:
690:Progress Singapore Party
614:and Non-Constituency MP
609:Leader of the Opposition
400:Singapore People's Party
3798:Healthcare in Singapore
2843:cue (9 February 2023).
2142:hermes (13 June 2020).
1428:. Gov Tech, Singapore.
1395:"It Only Takes A Spark"
592:Criminal Procedure Code
498:With the easing of the
487:Singapore Tourism Board
478:Royal Caribbean Cruises
191:Government of Singapore
144:Digital contact tracing
58:2.14.2 / 31 May 2022
2456:Smart Nation Singapore
2426:Smart Nation Singapore
2396:Smart Nation Singapore
1495:Smart Nation Singapore
631:on 15 September 2022.
446:
418:
386:
293:in collaboration with
1121:"Why is NRIC needed?"
935:www.theregister.co.uk
682:People's Action Party
444:
416:
385:A TraceTogether token
384:
3750:Government responses
3623:. 18 February 2021.
2849:www.straitstimes.com
2823:www.straitstimes.com
2797:www.straitstimes.com
2244:. 9 September 2020.
1934:www.straitstimes.com
1805:. 4 September 2020.
1181:"What is SafeEntry?"
900:"BlueTrace Protocol"
620:Punggol Field murder
596:Christopher de Souza
82:/opentrace-community
3803:Government software
3433:. 3 February 2021.
3319:. 2 February 2021.
3194:. 3 February 2021.
3027:. 3 February 2021.
2084:. 21 October 2020.
1680:. 7 December 2020.
1620:. 7 December 2020.
1590:. 7 December 2020.
756:channelnewsasia.com
629:strokes of the cane
575:On 4 January 2021,
391:Vivian Balakrishnan
377:TraceTogether Token
313:Vivian Balakrishnan
273:To trace users the
23:
3159:. 4 January 2021.
3056:The Online Citizen
2613:. 4 October 2020.
1773:The Online Citizen
1275:TraceTogether FAQs
1245:TraceTogether FAQs
1215:TraceTogether FAQs
1155:TraceTogether FAQs
1125:TraceTogether FAQs
559:(DP-3T) protocol.
447:
419:
387:
295:Ministry of Health
275:Ministry of Health
21:
3780:
3779:
3621:The Straits Times
3554:The Straits Times
3523:The Straits Times
3431:The Straits Times
3370:The Straits Times
3317:The Straits Times
3226:The Straits Times
3192:The Straits Times
3025:The Straits Times
2876:. 9 February 2023
2874:sg.news.yahoo.com
2770:sg.news.yahoo.com
2740:The Straits Times
2706:The Straits Times
2642:The Straits Times
2581:The Straits Times
2490:The Straits Times
2333:The Straits Times
2272:The Straits Times
2242:The Straits Times
2212:The Straits Times
2148:The Straits Times
2082:The Straits Times
1870:The Straits Times
1743:The Straits Times
1709:The Straits Times
1618:The Straits Times
1558:The Straits Times
1462:The Straits Times
1311:on 8 January 2021
1031:The Straits Times
966:The Straits Times
929:Sharwood, Simon.
853:The Straits Times
758:. 20 March 2020.
666:COVID-19 pandemic
625:life imprisonment
224:TraceTogether app
184:
183:
3840:
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3149:
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3142:
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3119:
3110:
3109:
3107:
3105:
3088:Mohan, Matthew.
3085:
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3067:
3047:
3041:
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3017:
3008:
3007:
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2572:
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2255:
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2203:
2197:
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2159:
2139:
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2109:
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2074:
2068:
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2065:
2063:
2043:
2037:
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2012:
2006:
2005:
2003:
2001:
1981:
1975:
1974:
1972:
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1951:
1945:
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1940:
1925:
1916:
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1911:
1892:
1886:
1885:
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1861:
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1830:
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1795:
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1670:
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1599:
1580:
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1406:
1390:
1381:
1380:
1378:
1376:
1357:
1351:
1350:
1348:
1346:
1337:. 10 June 2020.
1327:
1321:
1320:
1318:
1316:
1307:. Archived from
1297:
1291:
1290:
1288:
1286:
1267:
1261:
1260:
1258:
1256:
1247:. 26 June 2020.
1237:
1231:
1230:
1228:
1226:
1207:
1201:
1200:
1198:
1196:
1177:
1171:
1170:
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1138:
1136:
1117:
1111:
1110:
1108:
1106:
1086:
1080:
1079:
1077:
1075:
1066:. 15 June 2020.
1056:
1047:
1046:
1044:
1042:
1022:
1013:
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1010:
1008:
988:
982:
981:
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828:
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771:
769:
767:
748:
728:
725:
285:Release timeline
179:
176:
174:
172:
115:Operating system
103:Kotlin (Android)
89:
84:
81:
79:
31:
24:
20:
3848:
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3546:
3542:
3532:
3530:
3515:
3511:
3501:
3499:
3484:
3480:
3470:
3468:
3457:"TraceTogether"
3455:
3454:
3450:
3440:
3438:
3425:
3424:
3420:
3410:
3408:
3393:
3389:
3379:
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3199:
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3101:
3086:
3075:
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3019:
3018:
3011:
3001:
2999:
2986:
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2896:
2889:
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2863:
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2841:
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2827:
2825:
2815:
2811:
2801:
2799:
2789:
2785:
2775:
2773:
2772:. 22 April 2022
2764:
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1361:"TraceTogether"
1359:
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1329:
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1301:"TraceTogether"
1299:
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1157:. 8 June 2020.
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195:contact tracing
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1946:
1917:
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1790:
1775:. 5 May 2020.
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1729:
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1665:
1635:
1605:
1575:
1539:
1512:
1479:
1443:
1422:"One Month On"
1412:
1382:
1365:apps.apple.com
1352:
1335:MobiHealthNews
1322:
1292:
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1232:
1202:
1185:Team SafeEntry
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1142:
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1081:
1064:Bloomberg News
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686:Workers' Party
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3157:Bloomberg.com
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3127:mothership.sg
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500:Covid Omicron
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451:TraceTogether
443:
434:
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427:Straits Times
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19:
3818:IOS software
3771:
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3651:
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3562:. Retrieved
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2282:25 September
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2020:
2010:
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1989:
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1626:. Retrieved
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1566:. Retrieved
1557:
1530:. Retrieved
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1373:. Retrieved
1364:
1355:
1343:. Retrieved
1334:
1325:
1313:. Retrieved
1309:the original
1304:
1295:
1283:. Retrieved
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1244:
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1175:
1163:. Retrieved
1154:
1145:
1133:. Retrieved
1124:
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1094:
1089:Yu, Eileen.
1084:
1072:. Retrieved
1063:
1039:. Retrieved
1030:
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996:
991:Yu, Eileen.
986:
974:. Retrieved
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943:. Retrieved
934:
924:
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904:bluetrace.io
903:
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873:
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825:. Retrieved
790:
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776:
764:. Retrieved
755:
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676:
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658:
655:
651:
638:
612:Pritam Singh
605:
582:revealed in
574:
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245:open sourced
238:
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186:
185:
130:Available in
37:Developer(s)
18:
3662:22 February
3631:22 February
3401:TODAYonline
2880:17 February
2854:17 February
2828:17 February
2611:TODAYonline
2520:TODAYonline
2500:31 December
2466:31 December
2436:31 December
2406:31 December
2376:31 December
2343:31 December
2312:31 December
2181:TODAYonline
2117:TODAYonline
1910:29 December
1880:15 December
1849:15 December
1813:5 September
1688:15 December
1678:gartner.com
1648:gartner.com
1255:5 September
1165:5 September
827:3 September
662:K Shanmugam
580:Desmond Tan
311:Initiative
106:Swift (iOS)
3787:Categories
3741:Statistics
3601:2 February
3502:2 February
3441:3 February
3411:3 February
3327:3 February
3297:2 February
3236:3 February
3202:3 February
3066:3 February
3035:3 February
2973:2006.05914
2652:23 October
2092:8 December
1939:21 January
1753:23 October
1722:5 February
1658:8 December
1628:8 December
1598:8 December
1532:2 February
1505:2 February
1472:2 February
1436:2 February
1405:2 February
1285:2 February
1195:2 February
1135:2 February
1105:2 February
1074:2 February
1041:2 February
1007:23 October
976:23 October
800:2103.10585
735:References
688:(WP), and
646:Eugene Tan
584:Parliament
502:wave, the
229:Technology
97:Written in
69:Repository
3828:Data laws
3767:SafeEntry
3564:6 January
3533:6 January
3380:5 January
3267:5 January
3167:4 January
3137:4 January
3104:4 January
2621:5 October
2530:27 August
2191:6 October
2158:6 October
2127:6 October
2031:1 January
2000:1 January
1990:Bloomberg
1969:1 January
1717:0585-3923
1568:6 October
817:232290602
709:SafeEntry
635:Reactions
550:The main
521:BlueTrace
264:SafeEntry
253:OpenTrace
249:BlueTrace
241:BlueTrace
235:BlueTrace
207:SafeEntry
3713:Timeline
3656:Archived
3625:Archived
3595:Archived
3558:Archived
3527:Archived
3496:Archived
3492:BBC News
3465:Archived
3435:Archived
3405:Archived
3374:Archived
3321:Archived
3291:Archived
3261:Archived
3230:Archived
3196:Archived
3161:Archived
3131:Archived
3098:Archived
3060:Archived
3029:Archived
2996:Archived
2944:Archived
2920:12 April
2911:Archived
2802:22 April
2776:22 April
2744:Archived
2710:Archived
2679:Archived
2646:Archived
2615:Archived
2585:Archived
2554:Archived
2524:Archived
2494:Archived
2460:Archived
2430:Archived
2400:Archived
2370:Archived
2337:Archived
2306:Archived
2276:Archived
2246:Archived
2216:Archived
2185:Archived
2152:Archived
2121:Archived
2086:Archived
2062:23 April
2056:Archived
2025:Archived
1994:Archived
1963:Archived
1904:Archived
1874:Archived
1843:Archived
1807:Archived
1777:Archived
1747:Archived
1682:Archived
1652:Archived
1622:Archived
1592:Archived
1562:Archived
1526:Archived
1499:Archived
1466:Archived
1430:Archived
1399:Archived
1369:Archived
1339:Archived
1279:Archived
1249:Archived
1219:Archived
1189:Archived
1159:Archived
1129:Archived
1099:Archived
1068:Archived
1035:Archived
1001:Archived
970:Archived
945:12 April
939:Archived
914:12 April
908:Archived
878:Archived
821:Archived
766:12 April
760:Archived
703:See also
627:with 15
462:Singpass
203:COVID-19
3494:. BBC.
2591:17 June
2222:18 June
1375:29 July
1345:18 June
515:Privacy
325:Gartner
297:(MOH).
166:Website
160:GPL-3.0
155:Licence
120:Android
3471:17 May
3002:28 May
2950:31 May
2685:11 May
2560:5 June
1783:30 May
1715:
1426:Medium
1315:28 May
1225:13 May
884:31 May
815:
588:police
334:Uptake
78:github
2968:arXiv
2914:(PDF)
2903:(PDF)
2750:7 May
2716:7 May
1095:ZDNet
997:ZDNet
813:S2CID
795:arXiv
793:(3).
715:Notes
543:them.
3736:2023
3731:2022
3726:2021
3721:2020
3664:2021
3633:2021
3603:2021
3566:2021
3535:2021
3504:2021
3473:2021
3443:2021
3413:2021
3382:2021
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