A geocoded photograph is a photograph which is associated with a geographical location. A geocoded image can be associated to geographical coordinates such as latitude and longitude or a physical address.
A QR Code is a matrix code (or two-dimensional bar code) created by Japanese corporation Denso-Wave in 1994. The "QR" is derived from "Quick Response", as the creator intended the code to allow its contents to be decoded at high speed. QR Codes are common in Japan where they are currently the most popular type of two dimensional code.
