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  2. Scan these Spotify Codes with the new camera in the Spotify app's search bar to instantly play that music.

  3. How to scan with an iPhone - Engadget

    www.engadget.com/how-to-scan-with-iphone...

    The default way to scan a document with an iPhone lives within iOS’ native Notes app. Open it and open a new note. Tap the camera icon on the bottom menu bar, tap Scan Documents and then hold ...

  4. Opera update uses QR codes to sync data between PC and ...

    www.engadget.com/opera-makes-it-easier-to-sync...

    You just navigate to opera.com/connect on your PC and scan the displayed QR code using the QR-reader in Opera for Android. Once that’s done, all your bookmarks, favorites, history and more...

  5. Aztec Code - Wikipedia

    en.wikipedia.org/wiki/Aztec_Code

    The Aztec Code is a matrix code invented by Andrew Longacre, Jr. and Robert Hussey in 1995. [1] The code was published by AIM, Inc. in 1997. Although the Aztec Code was patented, that patent was officially made public domain. [2] The Aztec Code is also published as ISO/IEC 24778:2008 standard.

  6. 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 ...

  7. PDF417 - Wikipedia

    en.wikipedia.org/wiki/PDF417

    PDF417. PDF417 is a stacked linear barcode format used in a variety of applications such as transport, identification cards, and inventory management. "PDF" stands for Portable Data File. The "417" signifies that each pattern in the code consists of 4 bars and spaces in a pattern that is 17 units (modules) long.