The QR code was invented in 1994 by the Japanese corporation Denso Wave. It is a two-dimensional barcode that can store up to 7,089 characters of information and it has been used for tracking parts in manufacturing plants since its inception. In 2005, NTT DoCoMo developed an application called “i-mode” which allowed users to scan these codes with their mobile phones and access web pages or send messages via text messaging (SMS). This led to the creation of many other applications using this technology such as marketing campaigns, loyalty programs etc… » learn more