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Biometric devices have been used by man over a long period of time. Non-automated biometric devices have been used since 500 BC as it was seen that Babylonian business transactions were recorded on clay tablets that included fingerprints. The first systems measured the shape of the hand and the length of the fingers. Although discontinued in the 1980s, this system set a precedent for future Biometric Devices. And now it used as a security identification and authentication device. Such devices use automated methods of verifying or recognizing the identity of a living person based on a physiological or behavioral characteristic.

A Biometric device is a security identification and authentication device. Such devices use automated methods of verifying or recognising the identity of a living person based on a physiological or behavioural characteristic. These characteristics include fingerprints, facial images, Iris prints and voice recognition.

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