(BBC) - The Quick Response (QR) codes are more often used in the advertising industry to allow customers access to product information.
The invisible version can be printed onto paper, glass or other materials and is invisible to the naked eye, becoming visible under infrared light.
QR codes can hold up to 100 times more information than traditional barcodes and are widely used in the advertising industry to give people more information about a certain product.
Usually a square of black and white pixels, the codes can be scanned by a smartphone which links users to a website... Source/Origin >> Read More
