What Are QR Codes?
Starting in about 1994 these crazy little symbols started to appear in stores, shops, magazines and newspapers. As usual, this started in Japan but now is rapidly taking its place in the U.S. QR Codes, Quick Response Codes, are similar to bar codes but have much greater functionality and therefore far greater appeal to marketers of all kinds.
At first glance these images appear to be nothing more than a mosaic of lines and look a great deal like the tiles I
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