METHODOLOGY

UNDERSTANDING THE CONCEPT AND THEORY

Firstly, the concept and theory of the overall system need to be understands and some research required. A keypad used as a key to this system. LCD to display bit enter by the user. User needs to enter the password by inserting 5 bits (using encryption method). After that, the PIC will trigger the password either true or false. If true, magnetic door is open and magnetic sensor is off. If false, the user has a chance until three times to enter the password. After three times, no more chance and buzzer is on to alerting the user. If locker been interrupted, the transmitter is activated to send the signal to the receiver. Then, the status of the door will show in the computer.