This International Standard specifies the requirements for the EAN/UPC symbology including data character encodation, symbol formats, dimensions, test specifications, and a reference decoding algorithm.
Data content and the rules governing the use of this symbology are defined in the UCC/EAN system specifications.
ISO/IEC 15420:2000 history
2009ISO/IEC 15420:2009 Information technology - Automatic identification and data capture techniques - EAN/UPC bar code symbology specification
2000ISO/IEC 15420:2000 Information technology - Automatic identification and data capture techniques - Bar code symbology specifications; EAN/UPC