Survey of Different Biometrics Techniques Biometrics Systems Personal Authenticati on Medical Diagnosis Future Expectation Ethnology Exploration

Biometrics is the study of automatically recognizing humans by means of inherently unique physical or behavioural characteristics. The human physical characteristics like fingerprints, face, hand geometry, voice, Signature, palm and iris are known as biometrics. These features are used to provide an authentication for computer based security systems. The existing computer security systems used at various places like banking, passport, credit cards, smart cards, PIN , access control and network security are using username and passwords for person identification. Biometric systems also introduce an aspect of user convenience. For example, they alleviate the need for a user to remember multiple passwords associated with different applications. A biometric system that uses a single biometric trait for recognition has to contend with problems related to non-universality of the trait, spoof attacks, limited degrees of freedom, large intra-class variability, and noisy data. Some of these problems can be addressed by integrating the evidence presented by multiple biometric traits of a user (e.g., face and iris). Such systems, known as multimodal biometric systems, In this paper, the main focus is on the various biometrics Techniques, their Types applications and the biometrics recognition systems.