A biometric
system can be used for person authentication or person recognition.
Person authentication answers the question, “Am I who I claim to be?” and then
confirms the validity of a claimed identity by comparing an authentication
template to a conscription template. Authentication thus needs a person to
provide his identity in order for it to be established. Thus, the association
needed for authentication is called one-to-one comparison.
During authentication, usually some acquaintance about the identity (such as
ID) is given to the system along with the biometric identifier. This additional
factor exceptionally presents an enrolled identity and extracted biometric
features to the system database. Authentication is used in everyday life at
such conditions as banking, using credit card, presence events, taking exams
and so on. Usually, a person’s identity is verified by the means of comparing
his facial biometrics and/or signature to the data stored on his passport, ID
or credit card. Sometimes, more than one source of information is used for such
authentication.
Biometric identification establishes a person's identity by
answering the question “Who am I?” To do so, a recognition system performs
matches to test person’s individuality against multiple biometric templates.
Thus, in identifications system, identical is one-to-many matching
(Jain, Flynn, & Ross, 2007).
There are two types of recognition systems: positive recognition
and negative recognition. The goal of a positive recognition system is to
locate a user’s biometric information in a biometric database. A common example
used in the literature of a positive identification system is inmate recognition,
where a camera for capturing a face or an iris is used as an alternative of a
usual ID.
No comments:
Post a Comment