The search for "" likely refers to ICAO Doc 9303 , the global standard for Machine Readable Travel Documents (MRTDs) such as ePassports. While "LIS" does not appear as a standard prefix for this document, "Doc 9303" is the definitive technical specification maintained by the International Civil Aviation Organization (ICAO) and endorsed by ISO as ISO/IEC 7501 . Overview of ICAO Doc 9303
: Specifies how facial images (mandatory), fingerprints, and iris scans (optional) are stored on contactless integrated circuits (chips).
: Outlines how data is organized within the electronic chip to ensure global interoperability.





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