QR codes, like the barcodes they enhance, convey information through a graphical code of black and white pixels. Where a barcode is one-dimensional, a QR code is two-dimensional. In this content it means that information is conveyed by reading both the horizontal and vertical locations of the pixels, rather than simply the horizontal position. As such, humans can decode parts of a QR code and translate the contents manually, though it is generally tedious and time-consuming. There is generally far more information included in a QR code than the short numerical strings contained in a UPC barcode, meaning human decoding… Read more