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The term “2D Barcode” is the name given to the next generation of the barcodes we are used to on everyday packaging and products. Before digging into 2D barcodes, we need to explain the history of 1D barcodes and how we arrived at this point. 1D barcodes are the traditional barcodes we see everyday, they are called one-dimensional because their pattern of thick and thin vertical bars is read in only one direction, from left to right.