Barcode ContentsMuch has been said about 2D barcodes, and the discussion has focused on the format of the 2D barcode itself -- QR Code, Data Matrix, and so on. But equally important is the format of what the barcode itself encodes. 2D barcodes encode text, generally, but that text can represent many things. Commonly, 2D barcodes encode text that represents a URL, like https://google.com/m. This is a special strin
