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This article shows and explains the five main types of Machine Readable Travel Documents, according to the ICAO Standard and therefore, covered by the Anyline MRZ scanner.
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TD3 Documents
TD3 sized Machine Readable Travel Documents consist of two lines of 44 characters each.
The full specification can be found in Doc 9303 Part 4 on the ICAO Website
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TD2 Documents
TD2 sized Machine Readable Official Travel Documents consist of two lines of 36 characters each.
The full specification can be found in Doc 9303 Part 6 on the ICAO Website
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TD1 Documents
TD1 sized Machine Readable Official Travel Documents consist of two lines of 30 characters each.
The full specification can be found in Doc 9303 Part 5 on the ICAO Website
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MRV-A Visa
Format-A Machine Readable Visas consist of two lines of 44 characters each.
The full specification can be found in Doc 9303 Part 7 on the ICAO Website
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MRV-B Visa
Format-B Machine Readable Visas consist of two lines of 36 characters each.
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For a full specification, we refer to the ASTRA brief
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All Check Digits Valid
Since some countries do not fully implement the ICAO Specifications, invalid check digits do not result in an invalid result object. Instead, the allCheckDigitsValid flag is set to false if at least one of the check digits is invalid. To determine the validity of individual check digits, the ICAO check digit algorithm can be found in Doc 9303 Part 3 on the ICAO Website.
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