Two dimensional barcode anti-counterfeiting was utilized in planar 2-d direction according to certain distribution black-and-white geometry graph to record data and information of barcode, also known as the "two dimensional barcode" "2d barcodes". It is one of the important parts of automatic identification technology, and also the key thing networking industry, the core technical one. Characteristic information of great capacity and coding range, freedom, high fault-tolerant ability strong, tightness, anti-counterfeiting sex good, decoder higher reliability.