Performance of a biometric system is usually articulated by some
parameters. A decision made by a biometric system is either a “genuine character”
type of decision or a “fraud” type of decision. For each type of conclusion,
there are two potential outcomes, true or false. Therefore, there are a total of
four possible outcomes: a authentic personality is conventional or a genuine
match occurred, a authentic individual is rejected or a false negative response
occurred, a fraud is rejected or a genuine rejection occurred and an impostor
is accepted or a false match occurred. As with any process, the correctness of
the process can be predictable in a arrogant manner through special parameter.
Due to the recent
security threats originating from assortment of sources (international
terrorism, structured crime, commercial espionage, illegal immigration, cyber
security, etc.), the use of biometric systems for person verification has
increased significantly as seen in variety of application scenarios together
with forensic, civil, and commercial sector, government sector, genetics, and
health care.
The use of biometric in law enforcement and forensic is known for
at least a few hundred years. Fingerprint recognition system is one of the
original and the most widely used biometric system for this reason. Such system
is used not only to link suspects to crime scenes, but also to link persons
arrested under another name to other potentially relevant cases, to identify
victims of the crime and to associate persons with events in complex databases.
Other biometric identifiers which are used in forensic sector include face,
signature, gait, voice and DNA. Face and gait can be used for observation
purposes very busy places such as stadiums, airports, meetings, etc.
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