What is biometrics?
The word biometrics has a Greek
origin: “metron” meaning measure and “bio” meaning life. Complex and
very expensive biometric systems have been used for the last decades in
high security areas. There is a whole series of biometric techniques
putting emphasis on the head (face, iris, retina, ear pattern, …), the
body (finger scan, hand geometry, vein pattern, DNA, …) or behavioural
characteristics (voice, signature, motion, keystroke patterns,…). Only
few of them are both technically mature and ready for the mass market at
reasonable prices. Biometric characteristics are registered through a
scanner for data acquisition. Certain unique features are extracted,
processed, converted into a binary code and then cryptographically
secured in a data base from that moment onwards. Newly presented data is
compared to previously saved master templates and access is granted
only on positive authentication.
Of all existing biometric techniques finger scanners offer the highest
convenience for the mass market. They are affordable, well accepted by the public, safe and technically mature.
No fingerprint stays on the scanner surface due to the finger being swiped over the scanner and the scanner texture not being modified.
How does scanning work?
When the users swipe their fingers over
the scanner the finger lines are analyzed via RF
technology and saved as a
unique key code. Each time the scanner is used the presented finger is
converted into a code and then compared to the one saved in the system.
The door opens only on a positive match.