Biometrics technology is used to identify and authenticate an individual based on personal characteristics. Examples of personal characteristics include fingerprints, face, retina, iris, speech, handwriting, hand geometry, and wrist veins.
NIST SP 800-36
Automated recognition of individuals based on their behavioral and biological characteristics.
In this document, biometrics may be used to unlock authentication tokens and prevent repudiation of registration.
NIST SP 800-63-2