Biometrics is the science, which opened the new gateway for the innovation in authenticating technologies. In all events of life we may bounded by a group of friends, relatives or colleagues. However, sometimes we need something in opposition to that crowd that is what we call it as privacy or seclusion. The Most of us are using personal computers and laptops. Some are very lethargy in the sense of keeping the privacy confidently whereas some are very sensitive. The sensitive person needs the seclusion in their laptops and personal computers. To quench their thirst the advantages of biometrics science have rolled out. The biometric authentication method checks the person physical uniqueness through finger print, retina sensing, voice identification, face identification and more. This biometric verification step allows only the authorized user to access their pc with full security. Nowadays all the computer systems are having the biometric inbuilt system. The biometric devices producers are giving unique range of devices suitable for the cost and need of industries. The benefit giving biometric equipments are going to become an ineluctable one in the forthcoming days. The biometric equipments are moving towards the bigger advancement like penetrating into the human body to find the authentication through the blood cells.