MRZ

Document area in which information adapted to be read by a machine appears. It is more reliable than the VIZ. It follows a standard defined by ICAO. There are different types, two lines (passport) or three lines (identification cards).

All the details regarding MRZ are explained in the ICAO standard:

• Machine Readable Travel Documents - Part 3: Specifications Common to all MRTDs

• Machine Readable Travel Documents - Part 4: Specifications for Machine Readable Passports (MRPs) and other TD3 Size MRTDs

  

A checksum is added to the numbers in the MRZ (dates and numbers of the documents) to increase the reliability of the reading.

Two-dimensional codes: PDF417, Code128, Code39

Items with information that appear in documents. It is necessary to decode them to obtain the information they have. Sometimes they are a single number recurrency and other times fields with information about the person or document.