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BS ISO/IEC 18004:2015
Information technology. Automatic identification and data capture techniques. QR Code bar code symbology specification (British Standard)
ISO/IEC 18004:2015 defines the requirements for the symbology known as QR Code. It specifies the QR Code symbology characteristics, data character encoding methods, symbol formats, dimensional characteristics, error correction rules, reference decoding algorithm, production quality requirements, and user-selectable application parameters.
British Standards Institution [bsi]