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What is Physiological Characteristics

Encyclopedia of Information Science and Technology, Third Edition
Physiological characteristics derives from the structural information of the human body. Fingerprint, Face, Ear, Iris, Retina, Palmprint, Veins etc. falls under the physiolosical traits.
Published in Chapter:
Human Ear Recognition System
Durgesh Singh (Indian Institute of Technology (BHU), India) and Sanjay Kumar Singh (Indian Institute of Technology (BHU), India)
DOI: 10.4018/978-1-4666-5888-2.ch540
A reliable human recognition scheme is required in wide variety of systems to either verify or identify the identity of an individual requesting their services. Using traditional approaches such as possession based and knowledge based systems, it is very difficult to differentiate between an authorized person and an impostor. This is a strong reason for replacing traditional ID-based systems with biometric systems which are based on human traits that cannot be denied, stolen, or faked easily. Biometric recognition refers to the automatic recognition, based on physiological and /or behavioral characteristics of an individual. By using biometrics, it is possible to establish an individual's identity based on “who he or she is” rather than by “what he or she possesses likes smart card” or “what he or she remembers likes password.” Human ear due to its consistent behavior over the age, has gained much popularity in recent years among various physiological biometric traits. The decidability index of the ear has been found that magnitude significant greater than that of face. Ear remarkably consistent and does not change its shape under expressions like face. The shape of the outer ear is recognized as a valuable means for personal identification. Naturally, an ear biometric system consists of ear detection and ear recognition modules. Ear biometric has played an important role for many years in forensic science and its use by law enforcement agencies.
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