Passports starting with EJ and EI cannot determine which country they belong to. "E" means electronic passport.

An electronic passport (Biometric passport) is a passport with a built-in tiny radio frequency identification contactless chip containing the biometric information of the bearer. It can be proved by biometric identification functions such as face recognition or signature. Identity of the travel document holder.

The contactless chip of the electronic passport carries a digital signature to ensure the integrity of the biometric data and passport. At this stage, biometric recognition includes face recognition, fingerprint recognition and iris scanning.

An electronic chip is embedded in the cover or a page of a traditional passport, and the holder's name, gender, date of birth, photo image, fingerprint and other personal information are stored in the chip.