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Abstract: Bidirectional Visitor counter is a circuit that can help to count the number of people present in a particular area. Bidirectional Visitor counter can be used in various fields like schools, function halls, shopping mall, parking slots and areas where large amount of people gathers like other public places. Bidirectional Visitor counter basically keeps a track of people entering and exiting from the place. Whenever a person enters or exits from the place it immediately has a track of it and displays it on the screen. By this way we have the number of person present in that area. If a place is with the electronic facility that is with lights, AC, Screens than if there is no person currently present in a room then it automatically turns off the lights and other electronic devices.