The Quick Response (QR) Code is a machine readable, two-dimensional barcode used to encode information attached to objects. They are found in product identification, advertising and other areas where metadata must be labelled concisely and unambiguously. QR codes are quickly decoded by machine, having in-built resilience to damage, obscuration or misalignment. They are generated through an internationally standardised procedure (ISO/IEC18004 2006) that converts simple text, a URL or executable commands into a square matrix of dots or modules.
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Jeremy C. Creasey
J&FC Consulting Ltd
Great Oaks, Back Road, Catbrook,
Monmouthshire NP16 6NA, UK