Biometric technologies are widely used in the public sector and the private organizations are yet to adopt it in large scale. With the problems faced in password based and token based security systems, biometrics is definitely the future of security. But the biometric system of the present day is still immature. Even though biometrics is the principal method for physical security, research is still being done. It is being combined with other branches of security (e.g. Biocryptics) and a huge amount of money is being put in this field by the government. A lot of questions are to be answered for the technology to be universally existent.