There are three types of MRZ, called MRZ 1, MRZ 2 and MRZ 3. Passports are usually fitted with Type 3 and ID cards with Type 1. The Type 3 MRZ consists of two lines of each 44 characters long and consists of name, passport number, nationality, data of birth, sex and expiration data. Sometimes additional data can be added. Only A-Z and 0-9 characters are included in the MRZ and the separator. The Type 2 format is not commonly used, but spans two lines of 36 characters long. The Type 2 only consists of A-Z and 0-9 characters next to the separator. The Type 1 format spans three lines and each line is 30 characters long. Also in the Type 1 only A-Z and 0-9 are included, next to the separator. Klippa’s MRZ OCR works an all types of MRZs.