This International Standard specifies the requirements for the bar code symbology known as PDF417. It specifies PDF417 symbology characteristics, data character encodation, symbol formats, dimensions, error correction rules, reference decoding algorithm, an a number of application parameters.
DS/EN ISO/IEC 15438:2011 history
2011DS/EN ISO/IEC 15438:2011 Information technology - Automatic identification and data capture techniques - PDF417 bar code symbology specification