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Biometrics is the technical term for body and biological measurements and calculations that can be used to identify individuals. It refers to metrics related to human characteristics. Biometrics allowas a person or an individual to be verified and authenticated based on a set of recognizable and verifiable data which are unique and specific for them.

Biometric identification consists of determining the identity and physical characteristics of a person and compare the person’s biometric template in order to determine resemblance.There are several ways of determining one’s unique caharacteristics. It can be facial recognition, fingerprint mapping, or retina scan. These are the most recognizable and popular option of forms of biometric technology. This data is then compared and reffered to the biometric data of several other persons kept in a database.

Advanced biometrics are also used to protect sensitive documents that should only be access by authorize personnel. Researchers also claims that the shape of an ear, the way someone sits and walks, unique body odors, the veins in one’s hands, and even facial contortions are other unique identifiers.

Since biometric identifiers are unique and fixed to individuals, they are more reliable in verifying and authenticating identity than token and knowledge-based methods; however the collection of biometric identifiers raises privacy concerns about the ultimate use of this information. Biometric identifiers are the distinctive, measurable characteristics used to label and describe each individual and used as a password, personal identification number and access. Biometric authentication is convenient, and secure but privacy advocates fear that biometric security erodes personal privacy. The concern and worry of most of us is that personal data could be collected easily and without consent.