QR Code, 2D, matrix & scanning

QR Code, a type of bar code that consists of a printed square pattern of small black and white squares that encode data which can be scanned into a computer system. The black and white squares can represent numbers from 0 to 9, letters from A to Z, or characters in non-Latin scripts such as

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What Is a 2-D Barcode

15 Essential Facts About 2D Barcodes

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Connecting the Dots: An Introduction to 2D Barcodes - Masabi

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