Biometrics is the science and technology of measuring and analyzing of biological data. It has been used to uniquely identify individuals by their physical characteristics or personal behavior traits. It is used to allow employees access to concerned areas and for general ID purposes. A biometrics system goes through three basic steps: acquiring of data, encrypting data and analysis of data. Biometrics is being used in ATMs, computers, security installations, mobile phones, credit cards, health and social services.