From ancient time till date we all are very much serious about keeping our houses, properties or any confidential information as secured as possible. Today, hiring security guards is not a sufficient solution to define an efficient user access control system. Along with time, technologies have come out in many different ways of user access control system to keep our resources secure. User access control systems help restricting access to network resources or buildings at different levels.
Contemporary user access control systems works on the basis of several components. Core component in user access control is computerized control center that works on database or log for each user.