ISO (the International organization for stadardiization) and IEC (the International Electrotechnical commission) form the specialized system for worldwide standardization. The first standard of this deals with the threat and countermeasure of biometrics and biometric system application models. Additionally, this international standard provides requirements and guidelines for the secure and privacy –compliant management and processing of biometric information. We analyze here that inclination of people towards biometric for using it as a security measure is mainly due to Identity Theft. we study various biometric system application models and analyzed that because of Identity theft problem most companies provides physical access control and logical access control services in perspective of three factors that is Business case, Technical performance and User acceptance.