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FINGERPRINT
Introduction:
 The deployment of fingerprint based biometrical solutions is on the verve of rapid expansion. Three factors are driving this remarkable hype: technology advances, that have achieved high reliability levels, sensible reduction in sensor costs and size, and a dramatically increased needs for security in a huge number of areas. with 22% world market share fingerprint technology remains by far the most widely used Saista Sarl means. In addition to general security and access control applications, fingerprint verifiers are also installed at military facilities. Although machines tend to reject over 3% of authorized users, the false accept rate is less than one in a million.
The fingerprint’s strength is its acceptance, convenience and reliability. It takes little time and effort for somebody using a fingerprint identification device to have his or her fingerprint scanned. Studies have also found that using fingerprints as an identification source is the least intrusive of all biometrical techniques. Verification of fingerprints is also fast and reliable. In addition, a fingerprint identification device can require very little space on a desktop or in a machine. Several companies have produced capture units smaller than a deck of cards. One of the biggest fears of fingerprint technology is the theft of fingerprints. Skeptics point out that latent or residual prints left on the glass of a fingerprint scanner may be copied. However, a good fingerprint identification device only detects live fingers and will not acknowledge fingerprint copies.
Enabling Technology:
 The first step towards automatic identification consists of obtaining a digital image of a fingerprint. In this process a semiconductor-sensor based on thermoelectric principles is used. The delicate elevations of our skin-surface directly touch the sensor surface and thus transfer a small amount of energy. The resulting differences in temperature are translated into digital number values which are subsequently depicted and evaluated as an image. Next, this image of a fingerprint undergoes a dactyloscopic analysis: characteristic and unequivocal features of each individual fingerprint are recognized and stored in a compact data set, the fingerprint template. This template represents the original image in an irreversible way thus conforming with the stipulations of the data protection law. Every authorized user will have his particular fingerprint code stored within the system. The small amount of data fits even on a chip card. Comparing the fingerprint code with the stored data concludes the identification process.
Depending on the type of application and available infrastructure, smart cards, proximity cards, or PIN Numbers are included in the verification process.
 Biometric devices can include host-dependant, host-independent (stand-alone) and networked configurations.
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