Instead of protecting the car from being stolen, protect the whole neighbourhood. Get rid of the people that steal (provided they are not too many and your car is cheap), guess everyone is busy thinking of all kinds of possible implementations now. Now it is adding additional dimension of fun to the electronics project. Cheers, Ling SM -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics