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Biometric techniques have usual advantages over conventional personal identification technique. Among various commercially available biometric techniques such as face, fingerprint, Iris etc., fingerprint-based techniques are the most accepted recognition system. Fingerprints are trace or impression of patterns created by friction ridges of the skin in the fingers and thumbs. Steganography usually used in smart card is a safe technique for authenticating a person. In steganography, biometric characteristic similar to fingerprint is hidden in an picture. As the quantity of information that can be stored by means of steganography is extremely restricted, compression mechanisms are essential in order to achieve reasonably little errors when finally checking fingerprints against the encoded templates.
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