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Biometric_authentication is a security process that relies on the unique biological characteristics of individuals to verify they are who they say they are. Biometric authentication systems compare physical or behavioral traits to stored, confirmed, authentic data in a database. If both samples of the biometric data match, authentication is confirmed. Typically, biometric authentication is used to manage access to physical and digital resources, such as buildings, rooms, and computing devices.

Biometric identification uses biometrics, such as fingerprints or retina scans, to identify a person, whereas biometric authentication is the use of biometrics to verify people are who they claim to be.

Source: https://searchsecurity.techtarget.com/definition/biometric-authentication