Biometrics is used to identify a part of body compared to alias in database . A part of body when correctly identified proves reliability of source. It is widely used for different purposes. This system of identification is genuine. Many biometrics exists like face recognition ,fingerprint or iris recognition. Many future endeavors is underway for better identification. Computers play a major role in diversification.
The system existed in prehistoric. Mankind realised that some parts of body is unique . In eightieth century Bertillon tried fingertip identification on trial basis. But it could not go . It was not until late nineteenth century when William Hershel started a serious biometric identification like fingerprinting for contractors. Thus biometric mapping was born . It is a separate field . Developments were made in early part of this century by police across various parts of world. Adaptive biometric means constantly upgrading input data for correction and self adjustment giving accurate results. Adaptive biometrics is proving to be role model for future initiative. One important part of biometric is permanence meaning the trend has to repeat itself over time or over certain period of time. Permeance has prominence in soft biometrics. By soft biometrics we mean behavioural instincts which are conceived important or unique . Cancelation of biometric is also possible nowadays. Recently it was felt that if some part of electronic biometric is lost then information is lost forever . Biometric is done when public database is made. It helps to maintain regularity and organise the personal information for better management of personal information