From Simple English Wikipedia, the free encyclopedia
Many computers have a fingerprint scanner. This allows for some security.
Biometrics is a field of study which identifies or recognises people by thetraits they have. Not to be confused withbiometry, the application of statistics to biology.
Given those traits, a system can betrained to recognise certain people, with a certainprobability. Training lowers the probability of falsely identifying someone.[1]
Most often, the two types are combined, as invoice or signature recognition. Most of these biometrics are seen as "behavioral", but some are linked to the physiology, e.g. of the vocal tract, or of the hand.
A person may be identified by afingerprint, or by letting the personsign adocument. The data could then be kept. Someone who is checking can again take the fingerprint or the signature, and compare it to the old version.
When selecting features, those choosing must also look at social acceptance. Taking a fingerprint may be ok, taking ablood test may not be. Some biometric data is also easier to fake, e.g.signatures.
Also, whenvoice samples are taken, they may be distorted, if only atelephone line is available. Telephone lines cut off somebandwidth from thesignal.
Other than forpassports, biometric methods are also used in many banks.
