Kindsofbiometrics

=Kinds of Biometrics=

When someone is enrolled into a fingerprint-based biometric system it records a computerized mold of that fingerprint. This mold is used so that the computer can measure the relationship between the different points on the fingerprint, these points are what makes your fingerprint unique. Every time you try to access the system you have to have your fingerprint scanned and it is checked by the biometric software and an algorithm makes sure that this scanned print matched the computerized mold that it has on file.
 * Fingerprint**

These readers are a typically a metal plate with guide pegs on it. You place your hand on the plate and the reader studies the patterns and angles of that outstretched hand to make a match with a diagram of another hand that they have on their system of people who are allowed to have access.
 * Hand Geometry**

The eyeball has many unique and identifying characteristics that remain more or less constant over your lifetime. There are two places that biometric systems use, the retina which is the back wall of your eyeball, and the iris which is the coloured disk on the front of your eyeball. There is also a third way that biometric systems use but this is less applied. It is called "whole eye" and it is the combination of the iris, retina and other ocular features.
 * Iris or Retinal Scans**

These systems take video or photos and it looks for recognizable facial characteristics and tries to match them to a known facial template to identify individuals.
 * Facial Recognition**

It has been proven that a person's voice is unique just like their fingerprints. A person can be identified by his/her unique vocal characteristics and of their speaking patterns. It is the process of comparing a voice sample with a voice sample that they have saved in a database, the saved voice sample is called a voiceprint. A voiceprint is not a recording or sound file – it cannot be played back into a voice biometrics system by an imposter.
 * Voice Recognition**

More information? http://www.biometricsinstitute.org/displaycommon.cfm?an=1&subarticlenbr=30