Another direction being taken by bar codes is the deployment of the ā€œ2-Dā€ (two-dimensional) version. Unlike 1-D UPC codes that consist of a series of parallel lines, the 2-D codes come in patterns of squares, dots, hexagons and other geometric patterns. They also hold more data than the 1-D codes. Last month, J.C. Penney and Cellfire announced that the retailer would be offering downloadable cell phone coupons with 2-D bar codes that could be read at the POS with a Motorola handheld digital ...

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