Security in data communication is another important issue to be considered while designing wireless sensor networks, as WSN may be deployed in hostile areas like battlefields. The data aggregation protocols should work with the data communication security protocols, as any conflict between these protocols might create loopholes in network security Biometric system has been actively emerging in various industries for the past few years, and it is provide higher security for access control system. Various technologies have been proposed and implemented including iris, fingerprint, hand geometry, face, and etc. identification technologies. Fingerprint and hand geometry is the most widespread biometric system in the world.