Abstract: This paper discusses the contactless palm vein authentication technology that uses blood vessel patterns as a personal identifying factor. However current methods for identity verification such as passwords , code numbers, smart cards carry the risk of loss , theft, forgery or unauthorized use. Biometric authentication technology which authenticates physiological data ,is a non transferable way to supplement or serve as alternative to other system. Although biometric is used some extent by some companies and government authorities ,it must become less intrusive and more hygienic for it to gain wider acceptance.

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