International Journal Of Engineering And Computer Science
Security plays a vital role in all fields and in various applications. The existing computer security systems used at various places like banking, passport, credit cards, smart cards and PIN (Personal Identification Number), access control and network security are using username and passwords for person identification. In distributed system like ATM (Automated Teller Machine) the security is a main issue. The security level has been grown from providing PIN to smart card to biometrics. Even though the security has been increased at the same time fraudulent activities have been grown to equal level.