Biometrics | Pattern Recognition

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Biometrics is an automated method of recognizing a person based on a physiological or behavioral characteristic: Physiological biometrics is based on measurements and data retrieved from direct measurement of a part of the human body. Fingerprint, iris-scan, retina-scan, hand geometry, and facial recognition are leading physiological forms of biometrics.

Behavioral biometric is based on measurements and data derived from an action, and indirectly measure characteristics of the human body. Voice recognition, keystroke-scan, and signature-scan are leading behavioral forms of biometric technologies.

Uses for Biometric Security

Biometrics is used in two major ways: Identification and Verification.

 
Identification is determining who a person is. It involves taking the measured characteristic and trying to find a match in a database containing records of people and that characteristic. This method can require a large amount of processing power, if the database is very large. It is often used in determining the identity of a crime suspect.

 
Verification is the process of authenticating if a person is who he/she says he/she is. It involves taking the measured characteristic and comparing it to the previously recorded data for that person. This method requires less processing power and time, and is often used for accessing places or information.  

More Details - http://en.wikipedia.org/wiki/Biometrics

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