A Biometric system is a pattern recognition system. It operates by acquiring Biometric data from an individual, extracting a feature set from the acquired data, and comparing this feature set against the template set in the database. A number of Biometric characteristics exist and are in use in various applications. Each Biometric has its strengths and weaknesses, and the choice depends on the application. The match between a specific Biometric with an application is determined depending upon the operational mode of the application and the properties of the Biometric characteristic. Research...