What are the Different Components of an MRZ Barcode?

mrz barcode reader


Machine-readable zones (MRZs) are a type of barcode that is found on passports and other travel documents. They contain a wealth of information about the passport holder, such as their name, date of birth, and nationality. MRZs are read by MRZ scanners, which are used to verify the identity of the passport holder.

An MRZ barcode is composed of three lines of text, each of which is 30 characters long. The characters in an MRZ barcode are a combination of letters, numbers, and a special filler character, <. The different components of an MRZ barcode are as follows:

  • Line 1: This line contains the passport holder's surname, given name, and document number.
  • Line 2: This line contains the passport holder's date of birth, sex, and nationality.
  • Line 3: This line contains the passport holder's expiration date and check digit.

The check digit is a single character that is used to verify the accuracy of the data in the MRZ barcode. The check digit is calculated using a mathematical algorithm, and it must match the value that is calculated by the MRZ scanner.

The different components of an MRZ barcode are separated by spaces and the filler character, <. The filler character is used to pad the barcode to ensure that it is the correct length.

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