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Bio-metrics are a form of authentication which involve the use of some biological feature of a person to identify themselves. The most common form of bio-metrics is fingerprint verification. Bio-metrics have been relevant for a long time even before the development of modern technologies. 

Current uses include, but are not limited to computer access, fingerprint authentications, travel authentications such as passports, iris/eye scanning, etc.

Biometrics helps provide additional methods of authentication to existing systems to secure it further. Especially in fields such as e-commerce, biometrics could provide more reliable authentication and data security.

It is not farfetched to assume that biometric technology in the future will be further integrated into everyday methods of authentication.