Along with the improvement of human life, automobiles will be more and more dispensable. Stealing cars has become one of the common crimes since the first ford car was stolen. More cars are stolen nowadays because of the increase amount of automobiles, which heavily worried every car owner.
The original security system is installed in most of the new cars nowadays. The keys also have the theft proof chip. The thieves can not open the door by technological means, however, this kind of chip has trouble to duplicate if it is lost. Some Statistics show that some models of cars utilize the invisible integrate circuit card instead of the key. The security system will unlock automatically if there are three or five miles between the owner and the car, and the car will start when the owner pressing the ignition button. The door will also lock itself when the owner leaves more than five miles.