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User Identification using Finger Print
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Fingerprint verification, also known as a combination of 1: 1 fingerprints (one by one) or fingerprint authentication, is the process of confirming that a user is who he or she claims to be. In fingerprint verification, a user generally provides some type of identification, for example a user ID or user name or a card before placing his finger on the fingerprint scanner. The fingerprint verification software takes the user ID and tries to match the fingerprint with the fingerprints associated with this user ID. If a fingerprint match is found, access to the user is allowed. In fingerprint verification, biometric software needs to search only the individual record.

Fingerprint analysis for purposes of overlap usually requires comparison of various characteristics of the print pattern. These include patterns, which are aggregate features of ridges, and minutia points, which are unique features that lie within the patterns. It is also necessary to know the structure and properties of human skin in order to successfully use some of the imaging technologies. The three basic patterns of fingerprint crests are the bow, loop and spiral. An arch is a pattern in which the crests enter from one side of the finger, rise in the center in an arc and then leave the other side of the finger. The loop is a pattern in which the crests enter from one side of a finger, form a curve and tend to come out of the same side as they enter. In the whorl pattern, the ridges form circular around a central point on the finger.
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