RFID stands for radio frequency identification. It is a technology that incorporates the need of electromagnetic or electrostatic coupling in the radio frequency (RF) area of the electromagnetic spectrum to uniquely recognize an object, animal or person. RFID is appearing into increasing use in market as an alternative to the bar code.

The benefit of RFID is that it does not needed direct contact or line-of-sight scanning. An RFID system includes three components such as an antenna and transceiver and a transponder. The antenna needs radio frequency waves to send a signal that activates the transponder.

Traditional passports can only be anti-counterfeited through photos and printing technology, which is not only low in security, but also prone to forgery. With the application of RFID technology in passports, the RFID chip is embedded in the paper passport. The chip not only stores basic information such as name, date of birth, and signature, but also stores personal biological information such as face images, fingerprints, and irises. Feature data information. Passport holders can be quickly and accurately identified through RFID readers, minimizing the possibility of counterfeiting passports, and this application is rapidly developing and perfecting in various countries.