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  2. QR code - Wikipedia

    en.wikipedia.org/wiki/QR_Code

    The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. [5] [6] [7] The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; [8] the pattern of position detection was found and determined by applying the least-used ratio (1:1:3 ...

  3. Check-in QR code - Wikipedia

    en.wikipedia.org/wiki/Check-in_QR_code

    The venue code (left) and digital sentry (right) used in Shanghai, China. The check-in code or the venue code ( Chinese: 场所 码, Chǎngsuǒgmǎ) is a QR code to record check-in locations for contact tracing and epidemiologic investigations. It was widely used in Australia and China during the COVID-19 pandemic in 2020–2022.

  4. COVIDSafe - Wikipedia

    en.wikipedia.org/wiki/COVIDSafe

    COVIDSafe [14] [15] was a digital contact tracing app released by the Australian Government on 26 April 2020 [16] [17] to help combat the ongoing COVID-19 pandemic. [18] The app was intended to augment traditional contact tracing by automatically tracking encounters between users and later allowing a state or territory health authority to warn a user they have come within 1.5 metres (4 ft 11 ...

  5. COVID-19 pandemic in Singapore - Wikipedia

    en.wikipedia.org/wiki/COVID-19_pandemic_in_Singapore

    The COVID-19 pandemic in Singapore was a part of the worldwide pandemic of coronavirus disease 2019 caused by severe acute respiratory syndrome coronavirus 2 . The first case in Singapore was confirmed on 23 January 2020. Early cases were primarily imported until local transmission began to develop in February and March.

  6. Vaccine passports during the COVID-19 pandemic - Wikipedia

    en.wikipedia.org/wiki/Vaccine_passports_during...

    A vaccine passport or proof of vaccination is an immunity passport employed as a credential [1] in countries and jurisdictions as part of efforts to control the COVID-19 pandemic via vaccination. A vaccine passport is typically issued by a government or health authority, and usually consists of a digital or printed record.

  7. Johor–Singapore Causeway - Wikipedia

    en.wikipedia.org/wiki/Johor–Singapore_Causeway

    The Johor–Singapore Causeway is a 1.056-kilometre (0.66 mi) causeway consisting of a combined railway and motorway crossing that links the city of Johor Bahru in Malaysia across the Straits of Johor to the district and town of Woodlands in Singapore. It was the only land connection between the two from 1928 until 1998, when the Tuas Second ...

  8. NHS Test and Trace - Wikipedia

    en.wikipedia.org/wiki/NHS_Test_and_Trace

    NHS Test and Trace was a government-funded service in England, established in 2020 to track and help prevent the spread of COVID-19. The programme is part of the UK Health Security Agency; the service and the agency are headed by Jenny Harries . The service was the responsibility of the Secretary of State for Health and Social Care and the ...

  9. COVID-19 testing - Wikipedia

    en.wikipedia.org/wiki/COVID-19_testing

    COVID-19 Antigen Rapid Test Kit; the timer is provided by the user. Mucus from nose or throat in a test liquid is placed onto a COVID-19 rapid antigen diagnostic test device. COVID-19 rapid testing in Rwanda. An antigen is the part of a pathogen that elicits an immune response. Antigen tests look for antigen proteins from the viral surface.