The International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). First edition. 2000-06-15. 122p. This International Standard specifies the requirements for the symbology known as QR Code. It specifies the QR Code Model 2 symbology characteristics, data character encodation, symbol formats, dimensional characteristics, error correction rules, reference decoding algorithm, production quality requirements, and user-selectable application parameters, and defines in an annex the features of Model 1 symbols which differ from Model 2.