Day in and day out we need to prove our identity at various places, for secure access to buildings, air and rail travel, to cast a vote, etc. Security and the authentication of individuals are necessary in different spheres of life. Traditionally, we have been using photo-based identity cards to prove our identity and we have been quite accustomed to it. These identity cards were augmented/replaced by passwords in many cases. However, of late, these conventional identity proofs are being replaced by biometric identifications to overcome many of the shortfalls of these methods. One of the most dangerous security threats is the impersonation, in which somebody claims to be somebody else. Trend in the identification & authentication world is headed towards biometrics. Finger prints, face recognition, Iris Recognition, DNA pattern recognition are replacing printed identity cards.