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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. Barcode - Wikipedia

   en.wikipedia.org/wiki/Barcode

   Barcode. A UPC-A barcode. A barcode or bar code is a method of representing data in a visual, machine-readable form. Initially, barcodes represented data by varying the widths, spacings and sizes of parallel lines. These barcodes, now commonly referred to as linear or one-dimensional (1D), can be scanned by special optical scanners, called ...

4. 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 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.

5. See That Funny 2D Barcode In The Store Window? It Might Pull ...

   techcrunch.com/2009/12/06/google-local-maps-qr-code

   In conjunction with the QR code sticker roll-out, Google is also giving away 40,000 Quickmark QR Code Reader apps for the iPhone, which normally cost $1.99 apiece. But you can use any QR code reader.

6. Scan these new QR-style Spotify Codes to instantly play a ...

   techcrunch.com/2017/05/05/spotify-codes

   To pull up a Spotify Code, just tap the “three dots” button on the right side of the screen while playing a song, or looking at an artist or playlist. To scan one, go to the search bar, tap ...

7. Snapchat now lets you make QR Snapcodes that open websites

   techcrunch.com/2017/01/31/website-snapcodes

   To use the feature, open “Settings” and select “Snapcodes,” then “Create Snapcode.”. Enter the URL, add an image from the website or your phone, resize it so it fits inside the ...