MRZ (machine-readable zone)
The lines of characters at the bottom of a passport or ID card that machines can read.
The machine-readable zone holds the holder's name, document number, nationality, date of birth, sex and expiry date in a standard format defined by ICAO Doc 9303. Passports have two lines of 44 characters; ID cards usually have three lines of 30.
What it is used for
- Extracting document data reliably, without manual typing.
- Catching errors and simple edits with built-in check digits.
- Comparing with the printed data to spot tampering.
- Unlocking the document chip for NFC reading.
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