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The term security is more attractive in the present-day scenario in every aspect of life. This has encouraged the use of biometric authentication in almost all the fields where security is in need. Biometrics is associated with the human biological features which includes both the physiological as well as behavioral traits. The use of biometrics can be single modal or multi modal. Single mode uses only a particular human trait whereas multimodal includes a number of traits. However, use of multimodal techniques has shown a good success rate when compared to single mode. Use of biometric techniques provides a great advantage over already established techniques such as use of an ATM card, passwords, keys, pins etc…. where all these established techniques are harmful one or the other ways as the pins, passwords can be forgotten, keys and cards can be stolen. Thus the objective of using a biometric authentication system is to secure the most important information especially for the applications of military, naval and army.
There are a number of human traits that can be captured and a number of ways to capture these human traits. Finger print, ECG, EEG, voice, gait, key stroke dynamics, ear geometry, hand geometry, finger geometry, vein recognition are a very few techniques. This paper presents the introduction of such traits.
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