"...Security of personal belongings is a major concern of all individuals. One can install an access control system in home, offices and other workplace. It is a mechanical or electronic device that allows only authorized users to access important resources like buildings, house, computer information, tools and many more. Their objective is to limit the resources to individuals. The resources are accessed by people who have full authorization. In earlier times, wires were the important physical medium used for installing security systems. With the advent of modern technology, new access control systems are developed that are reasonably priced and easy to install. Use of less of hardware, easy installation and cost effective feature has greatly acknowledged wireless communication. Access control systems offer protection to important, concealed and receptive tools and information. They give various services in terms of computer security like authorization, accountability, access approval, identification and authentication..."
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