A QR Code (Quick Response Code) is a two intentional code or a series of matrix barcode which can be detected by QR scanners. Although originally used to help track vehicles during their manufacture, there use has extended to the consumer advertising space.
A typical use case for a QR Code is where the code is scanned, then processed into a website URL the user is directed to. As a result of this action, the requirement to manually type in a website address is removed.
It must be also noted that some of the best uses of QR code in marketing include ads within mobile apps, greeting cards and the sending music tracks and playlists to friends.