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2. 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.

3. Where to order free COVID tests from the U.S ... - AOL

   www.aol.com/finance/where-order-free-covid-tests...

   If your medicine cabinet is bereft of COVID tests, now is the time to stock up: The U.S. government is again mailing out free kits, ahead of an anticipated fall and winter surge.. Each U.S ...

4. Free COVID Tests Are Back: Here’s How to Get Them By Mail - AOL

   www.aol.com/free-covid-tests-back-them-155900419...

   How to order free COVID tests online. The process of ordering free COVID tests online is simple. Just go to COVIDtests.gov and click the button that says, “order free at-home tests." That takes ...

5. 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 ...

6. US households can now order four free Covid tests from the ...

   www.aol.com/us-offer-free-home-covid-072011083.html

   New Covid boosters from Pfizer and Moderna are now available at pharmacies nationwide, and the US is restarting its free Covid test program.. Tests can be ordered from COVIDTests.gov starting ...

7. 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 ...

8. Free COVID tests from the government are back: How to ... - AOL

   www.aol.com/news/free-covid-tests-government...

   Back in May, the Biden administration announced an end to the COVID-19 public health emergency, which meant a cut in funding to services that provided tools, like free and low-cost tests and large ...

9. COVID-19 apps - Wikipedia

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

   Example proposal for a location-based COVID-19 contact tracing app: Contacts of individual A (and all individuals using the app) are traced using GPS co-localizations with other app users, supplemented by scanning QR codes displayed on high-traffic public amenities where GPS is too coarse. Individual A requests a SARS-COV-2 test (using the app ...