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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. 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; the pattern of position detection was found and determined by applying the least-used ratio (1:1:3:1:1) in black ...

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. Barcode Scanner (application) - Wikipedia

   en.wikipedia.org/wiki/Barcode_Scanner_(application)

   Barcode Scanner scanning a QR code. The application Barcode Scanner is an Android app, from the open-source project ZXing (short for Zebra Crossing ), that allows an Android device with imaging hardware (a built-in camera) to scan barcodes or 2D barcodes and retrieve the data encoded. [2] Information encoded often includes web addresses ...

5. Add or disable 2-step verification for extra security - AOL Help

   help.aol.com/articles/2-step-verification...

   6. Scan the QR code using your authenticator app. 7. Click Continue. 8. Enter the code shown in your authenticator app. 9. Click Done. Sign in with 2-step for authenticator app. 1. Sign in to your AOL account with your password. 2. Enter the verification code shown in your authenticator app. 3. Click Verify.

6. Rectangular Micro QR Code - Wikipedia

   en.wikipedia.org/wiki/Rectangular_Micro_QR_Code

   Rectangular Micro QR Code (also known as rMQR Code) is two-dimensional (2D) matrix barcode invented and standardized in 2022 [1] by Denso Wave as ISO/IEC 23941. [2] rMQR Code is designed as a rectangular variation of QR code and has the same parameters and applications as original QR code. But rMQR Code is more suitable for the rectangular ...

7. VueScan - Wikipedia

   en.wikipedia.org/wiki/VueScan

   The software can be downloaded and used free of charge, but adds a watermark on scans until a license is purchased. Purpose [ edit ] VueScan is intended to work with a large number of image scanners, excluding specialised professional scanners such as drum scanners , on many computer operating systems (OS), even if drivers for the scanner are ...