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QR codes also may be linked to a location to track where a code has been scanned. Either the application that scans the QR code retrieves the geo information by using GPS and cell tower triangulation (aGPS) or the URL encoded in the QR code itself is associated with a location.
QRpedia is a mobile Web-based system which uses QR codes to deliver Wikipedia articles to users, in their preferred language. A typical use is on museum labels, linking to Wikipedia articles about the exhibited object.
There is no QRpedia API, but you can use, say, the Google QR code API (other QR code APIs exist) to generate a code with the relevant qrwp.org short URL. for example: http://en.qrwp.org/Amsterdam. or: http://sv.qrwp.org/Vincent_van_Gogh. Note the use of underscores in the latter; and that you can use any two-letter language code ("en, "sv", etc ...
Add an extra security step to sign into your account with 2-step verification. Find out how to turn on 2-step verification and receive a verification code, and how to turn off 2-step verification...
QR code payment is a contactless payment method where payment is performed by scanning a QR code from a mobile app. This is an alternative to doing electronic funds transfer at point of sale using a payment terminal . [2]
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.
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