1. How Fingerprint Scanners Work
Scanners began to launch even the high security
building and the PC keyboard everywhere in the
past several years in the police station. You were
able to pick up USB fingerprint scanner personal
for less than 100 dollars, and your computer was
guarded exactly by high-tech biometrics like that. In
the password or the password, to acquire
accessories, you need a peculiar print.

2. Fingerprint Basics
People have the ridge where the skin is small on
their fingers. The rubber tread pattern that it
becomes easier for the hand to grip the one by
"Valley" of the pattern and the finger of the ridge :
to the same way to help the tire to grip the road.
Each person has a different respectively
fingerprint, and does the personal identification
based on it.

3. Optical Scanner
The fingerprint scanner system has two basic work.
And, it is necessary to decide whether the ridge in
this image and the pattern of the valley are suitable
for the pattern of the ridge and the valley in the
image scanned beforehand.

4. Capacitance Scanner
A capacitive fingerprint scanner generates the
image of the ridge and the valley where the
fingerprint is made like an optical scanner.
This is composed by various parts such as
insulators and semiconductors.

5. Analysis
The scanner system software uses a very complex
though these details are analyzed recognizing it
algorithm.

6. Pros and cons
There are some methods by which the security
system can confirm someone is an authorized
user. Most systems are looking for the following
one or more:
* What you have
* What you know
* Who you are