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Biometric Capability Explanation
Identification is the process whereby one tries to match a submitted
sample of biometric information with an existing database
of known identities. If a match is established, the identity
of the person is established.
Verification is the process by whereby a confirmation to an identity
claim is established. It provides an answer to “Am I really
who I claim I am?”
Authentication is the process by which the truthfulness of the submitted
biometric sample is established. The authenticity of the
biometric sample submitted establishes the credentials of
the person.
Recognition is the process which is not necessarily for identification
or verification. It is meant for recognizing an individual –
especially when no features are available for detection.
DNA is an excellent example of Recognition application.
Table 3: Biometric functions
Figure 3: Tuning biometric systems
The diagram (Figure 3) shows how the configurable threshold determines the balance between
false match and false non-match rates. The probability for a false match or a false non-match
equals the area under the curve on either side of the threshold. By changing the threshold, one
area reduces while the other increases, hence determining the balance.
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