Survey of Biometric, Multimodal Biometric Systems

Now a days Security of computer science and information technology is an important issue. Authentication and identification are related to the security. The traditional methods for confirming person identity involve use of ATM, Pins, and Password which can be lost or stolen. So it is needed to have a system which provide security and overcome the limitations of traditional methods. A biometric is the automated method of identifying the person identity. Also biometric of the individual cannot be hacked easily like password and pin. Unimodal biometric system uses only one biometric as verification tool. It has some limitations. Multimodal biometric system uses more than one biometric as verification tool and overcome limitations of unimodal biometric system. So it is required to have survey on biometric and multimodal biometric system that provides more security in many applications and also need to know different algorithms used in biometric system.