MRZ
A machine-readable passport (MRP) is a machine-readable travel document (MRTD) with the data on the identity page encoded in optical character recognition format. Many countries began to issue machine-readable travel documents in the 1980s. Most travel passports worldwide are MRPs. The International Civil Aviation Organization (ICAO) requires all ICAO member states to issue only MRPs as of April 1, 2010, and all non-MRP passports must expire by November 24, 2015.
Machine-readable passports are standardized by the ICAO Document 9303 (endorsed by the International Organization for Standardization and the International Electrotechnical Commission as ISO/IEC 7501-1) and have a special machine-readable zone (MRZ), which is usually at the bottom of the identity page at the beginning of a passport. The ICAO 9303 describes three types of documents corresponding to the ISO/IEC 7810 sizes:
"Type 3" is typical of passport booklets. The MRZ consists of 2 lines × 44 characters.
"Type 2" is relatively rare with 2 lines × 36 characters.
"Type 1" is of a credit card-size with 3 lines × 30 characters.
The fixed format allows specification of document type, name, document number, nationality, date of birth, sex, and document expiration date. All these fields are required on a passport. There is room for optional, often country-dependent, supplementary information. There are also two sizes of machine-readable visas similarly defined.
Computers with a camera and suitable software can directly read the information on machine-readable passports. This enables faster processing of arriving passengers by immigration officials, and greater accuracy than manually-read passports, as well as faster data entry, more data to be read and better data matching against immigration databases and watchlists.
Apart from optically readable information, many passports contain an RFID chip which enables computers to read a higher amount of information, for example a photo of the bearer. These passports are called biometric passports and are also described by ICAO 9303.
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