Biometric principles

Princíp práce biometrického systému

Personal identity is confirmed through various physiological unique. Industry again and again is founding new attributes and ways of measurements of mentioned physiological unique

hand

Hand:

Optical scanning of hand geometry (palm and fingers), which is use for personal identity verification

  • False Reject Rate (FRR): 0.1%
  • False Accept Rate (FAR): 0.1%
  • Verification time: 1 to 2 seconds
finger

Fingerprint:

Optical scanning of fingerprints (minutiae points or papillary pattern). Readers dedicated for higher security level evaluated also next parameters

  • False Reject Rate (FRR): <1.0%
  • False Accept Rate (FAR): from 0.0001% to 0.00001% according type
  • Verification time: 0.2 to 1 second
eye

Eye:

Iris pattern (Color and structure of Your color part of eye)

  • False Reject Rate (FRR): 0. 00066%
  • False Accept Rate (FAR): 0.00078%
  • Verification time: 2 seconds

It run without ID number entry

face

Face:

Optical scanning of human face pattern

  • False Reject Rate (FRR): <1%
  • False Accept Rate (FAR): 0,1%
  • Verification time: 3 seconds
mouth

Voice:

Voice characteristics, bas and high tones, voice vibration and laryngeal and nose tones are use for voice verification

  • False Reject Rate (FRR): Unavailable
  • False Accept Rate (FAR): Unavailable
  • Verification time: 1.5 seconds
ear

Next bio verification methods:

  • Ala auris pattern
  • Decomposition of hand or face vessels
  • Smell (electronic nose)
  • Angle of femur and shank during walking

Importance of FRR (False Reject Rate) a FAR (False Accept Rate):

Biometrics started in extremely security applications. Main criteria were to hold "bad guys" OUT and provide entry for "good guys". False Accept Rate was determining factor. Anyway, after time, both parameters (FRR and FAR) have to be in optimal proportion. Similar situation is in car alarms, little wind does not need to launch alarm, but on the other hand "rough" attack has to lunch alarm on 100 percents

Future:

Future is very hopeful for biometric industry. It has main position in Access Control and Time and Attendance applications. Biometric technology is not any more science fiction. Huge of small corporations use biometrics a lot of years more and more. Readers cost was reduced and usage of biometrics is everyday reality.