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The advent of Biometrics Technologies has automated the identification of people by one or more of their distinct physical or behavioral characteristics. The term Biometrics covers a wide range of technologies that can be used to verify identity by measuring and analyzing human characteristics. These technologies provide a way to rely on the attributes of an individual instead of relying on things that an individual may have or know. In this paper, we provide an overview of all the leading biometrics technologies which are widely used throughout the world for automated, reliable and efficient identification of human. We explored the methods of implementation of each technology and on the basis of this exploration. We also proposed a comparative feasibility for the implementation of each technology in connection with a wide range of applications such as Electronic Access Control, Time and Attendance, ATM, Inmate booking & release/parole ID, Elimination of welfare frauds in benefits disbursements and Information Security. The paper also describes the major pros and cons of each technology with a clear indication of some suitable technologies that can be implemented in Pakistan.