http://en.wikipedia.org/wiki/QR_code
QR Codes is an abriviation of Quick Response codes, which is the trademark for a type of matrix barcode, or a two-dimentional code, the QR code origniated to be first used in the automotive industry. QR codes today are used is soo many different applications, such as by retail stores, corporate companies, and even today I seen a car for Darcy Davis who is running in the election, and who had a large QR code on the car.
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