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QR Code - Wikipedia, the free encyclopedia

QR Code - Wikipedia, the free encyclopedia: "A QR Code is a matrix barcode (or two-dimensional code), readable by QR scanners, mobile phones with a camera, and smartphones. The code consists of black modules arranged in a square pattern on white background. The information encoded can be text, URL or other data.
Common in Japan, where it was created by Toyota subsidiary Denso-Wave in 1994, the QR code is one of the most popular types of two-dimensional barcodes. QR is the acronym for Quick Response, as the creator intended the code to allow its contents to be decoded at high speed.[1]"