QR code (abbreviated from Quick Response Code) is the trademark for a type of matrix barcode (or two-dimensional barcode) first designed for the automotive industry in Japan.Originally designed for industrial uses, QR codes have become common in consumer advertising. Typically, a smartphone is used as a QR-code scanner, displaying the code and converting it to some useful form.A QR code looks like a simple design of black and white blocks in a square form, yet it contains highly detailed information. It is just like a 2D digital barcode.
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http://www.flong.com/projects/qr-codes-for-digital-nomads/
