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Our project deals with the design and implementation of a theft control system which prevents the theft of vehicle. The main theme of this project is to install a normally closed solenoid valve in the engine exhaust releasing system of the vehicle, which is controlled by the microcontroller AT89C51 through the driver circuit. The driver circuit used to drive the solenoid valve. Thus the enable and disable of solenoid valve is controlled by the microcontroller through the driver circuit. The digital key (password) is given to the authorized person of the vehicle (owner and driver) to start the vehicle by enter the keyword. After enter the keyword, the normally closed solenoid opens and the vehicles will be ready to start. The entry of wrong key by the unauthorized person will makes the system to send a warning message to the authorized person through GSM modem to safeguard their vehicle.LCD (Liquid Crystal Display) used to display the system functionality. This project can be simulated using the LAB VIEW platform
