Biometric identification technology refers to a technology that uses human body biological characteristics for identity authentication. To be more specific, biometric identification technology closely combines computers with high-tech means such as optics, acoustics, biosensors and biostatistics principles, and uses the inherent physiological characteristics and behavioral characteristics of the human body to identify personal identities. Common biometric features include fingerprints, faces, iris, DNA, etc.

The basic idea of ??biometric identification technology is to complete identity authentication by measuring individual characteristics to match the characteristic template in the database. For example, in a fingerprint recognition system, the fingerprint image is digitized and stored in a database. The fingerprint reader receives and processes the fingerprint image and matches it with the fingerprint template in the database to determine whether it is the same person. Similarly, face recognizers complete identity authentication by analyzing face images to match face templates in the database.

Biometric identification technology has the advantages of high efficiency, accuracy, and security, and is widely used in various fields of social production and life, such as security access control, bank credit cards, electronic signatures, transportation cards, etc. However, biometric identification technology also has some controversies and challenges, such as data privacy and security, improper use of privileges, etc., and it is necessary to strengthen regulations and management while promoting its application.