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Biometrics is the science and technology of measuring and analyzing biological data. In information technology, biometrics refers to technologies that measure and analyze human body characteristics, such as DNA, fingerprints, eye retinas and irises, voice patterns, facial patterns and hand measurements for authentication purposes. Fingerprint is one of the most developed biometrics, with more history, research and design. Fingerprint recognition identifies people by using the impressions made by the minute ridge formations or patterns found on the fingertips. The extraction of features from blurred or unclear fingerprints becomes difficult.
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