1. Biometric technology includes fingerprint, vein, palm, retina, iris, human body odor, face, even blood vessels, DNA, bones and other physical features. Signature, pronunciation, walking gait and other behavioral characteristics. Biometric identification system samples biological features, extracts their unique features and converts them into digital codes, and further forms feature templates from these codes.

2. Biometric identification technology is mainly used for identity authentication through human biometrics, in which biometrics are usually unique (different from others), measurable or automatically identified and verified, hereditary or lifelong.

Extended data:

1. In the global biometric market structure, the share of fingerprint recognition is 58%, the share of face recognition is 18%, followed by the emerging iris recognition with a share of 7%. In addition, there are palmprint recognition, voiceprint recognition and vein recognition similar to fingerprint recognition.

2. The human face is born with other biological features of the human body (fingerprints, irises, etc.). ), its uniqueness and good characteristics of not being easily copied provide the necessary premise for identity recognition.

3. China's second-generation ID card has achieved fingerprint collection, and all major smart phones have achieved fingerprint unlocking function. Compared with other biometric technologies, fingerprint identification has been widely used in consumer electronics, security and other industries. Through the test of time and practice, technology is also constantly innovating.

Baidu encyclopedia-biometric technology