How to tell the authenticity of China passport? If you know your passport, please come in.

A passport can only be completed through four stages: papermaking, printing, binding and issuance. Related anti-counterfeiting technologies can be understood by referring to paper money.

1. Watermark patterns need to be completed in the paper-making process. The density of paper changes, and the three-dimensional definition of patterns is strong, which can only be observed through light transmission.

2. The printing process will go through many processes, such as lithography, relief printing and gravure printing, so that the pictures and texts on the paper are three-dimensional and clear, and the touch is not as smooth as that of white paper, so you can feel the lines.

The real passport uses ultraviolet fluorescent ink. So some anti-counterfeiting needs purple light to shine.

Extended data

Fake passports refer to passports or other travel documents issued, copied or modified by institutions that have no right to issue or modify passports for the purpose of deception. Therefore, border inspection agencies cannot confirm the identity of the holder, so fake passports can be used for exile, identity theft, age deception, illegal immigration and organized crime.

The validity of diplomatic passports and official passports shall not exceed 10 years, and the validity of ordinary passports shall not exceed 10 years. After the expiration, new photos should be issued. Passports of the Hong Kong Special Administrative Region are generally valid for 10 years, and passports issued to children under 16 years old are valid for 5 years. Generally, Macao SAR passports are valid for 10 years, and passports issued to children under 16 years old are valid for 5 years.

Baidu encyclopedia-fake passport

Baidu Encyclopedia-Passport of People's Republic of China