Other Technology

Computerized fingerprint scanners have been a mainstay of spy thrillers for decades, but up until recently, they were pretty exotic technology in the real world. In the past few years, however, scanners have started popping up all over the place -- in police stations, high-security buildings
In very early days, our ancestors intuitively understand that certain characteristics could serve for purpose of identification. In a very developed technology today, the human systemic are still can be used as a identification system. Now we can use a fingerprint scanner to get an person’s identification. Biometric is a modern technique in solve to very old concerns with indisputable proof of identity base on a fingerprint and even on PC keyboards.

References:
1. http://computer.howstuffworks.com/fingerprint-scanner.htm
2. http://www.biometric-fingerprint.com/fingerprint-scanner.html