biometric system is physiological characteristics to identify an individual. biometrics is used for security. The method of identification based on biometric characteristics is preferred over traditional passwords and PIN based methods for various reasons such as: The person to be identified is required to be physically present at the time-of-identification. A biometric system is essentially a pattern recognition system which makes a personal identification by determining the authenticity of a specific physiological possessed by the user.aryah.net
Biometrics can also be used to verify a person’s identity. Biometrics can be used to determine a person’s identity even without his knowledge or consent.
Bertillonage:
The method consisted of identifying people by taking various body measurements like a person’s height, arm length, length and breadth of the head, the length of different fingers, the length of forearms, etc. using calipers.
Fingerprint Recognition:
It involves taking an image of a person’s fingertips and records its characteristics like whorls, arches, and loops along with the patterns of ridges, furrows, and minutiae.
This could occur when a person is similar to a user or has copied the user’s biological or behavioral information. A False Rejection occurs when a registered user is falsely rejected and not allowed access. This occurs when a user’s criteria does not match their stored information. For example, a cold could alter a vocal pattern or pitch.
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