Biometrics isn’t the stuff of science fiction. You can find close to a dozen more-or-less effective ways to use biometrics to identify someone, all of which fall into two classes:
Physiological biometrics measure a specific part of the structure or shape of a portion of a subject’s body.
Behavioral biometrics are more concerned with how you do something, rather than just a static measurement of a specific body part.
Basic Biometric Type Depends on . . . Effectiveness Includes . . . Behavioral Users performing well-known tasks (such as writing or walking)
in very similar ways every time.
The more a behavioral biometric is used, the more accurate it
will be as an authentication or identification tool.
Signature, voice, keystroke, gait Physiological Detailed information about parts of the body to uniquely
identify or authenticate a person.
The best physiological biometrics are those that change very
little over time and are protected from damage, such as those based
on the iris or hand veins.
Fingerprint, hand scan, iris scan, retina scan, facial