07-10-2010, 12:35 PM
BiomETRICS - An authentication.pptx (Size: 247.9 KB / Downloads: 100)
BIOMETRICS - An authentication
Movies to Real World
-Access to a security vault granted by a retinal scan
-A door unlocks as someone approaches, activated by facial recognition
-My car door unlocks as I touch the door handle
-Accessing a computer system by presenting a fingerprint
Biometrics Overview
The security field uses three different types of identification:
Something You Know — a password, PIN, or piece
of personal information (such as your mother's maiden name);
Something You Have — a card key, smart card, or token (like a Secur ID card); and/or
Something You Are —a biometric.
Of these, a biometric is the most secure and convenient authentication tool. It can't be borrowed, stolen, or forgotten, and forging one is practically impossible. (Replacement part surgery, by the way, is outside the scope of this presentation.)
What are Biometrics?
Biometrics are automated methods of identifying a person or verifying the identity of a person based on a physiological or behavioral characteristic
Physiological are related to the shape of the body. Examples include, but are not limited to fingerprint, face recognition, DNA, hand and palm geometry, iris recognition, which has largely replaced retina, and odor/scent.
Behavioral are related to the behavior of a person. Examples include, but are not limited to typing rhythm, and voice. Some researchers have coined the term behavior metrics for this class of biometrics.
Strictly speaking, voice is also a physiological trait because every person has a different vocal tract, but voice recognition is mainly based on the study of the way a person speaks, commonly classified as behavioral.
Biometric: Operation method
A biometric system can operate in the following two modes:
Verification – A one to one comparison of a captured biometric with a stored template to verify that the individual is who he claims to be. Can be done in conjunction with a smart card, username or ID number.
Identification – A one to many comparison of the captured biometric against a biometric database in attempt to identify an unknown individual. The identification only succeeds in identifying the individual if the comparison of the biometric sample to a template in the database falls within a previously set threshold.