Working of a car burglar alarm?

[Emmaeva9018]

One thing I have to clear is that I am not talking about car central locking system, I am asking for the working of a car burglar alarm which is when we opens that switch then only the car starts if we doesn't open it the car doesn't starts. I have to give a presentation on that so guys please help me with some material and pictures of it.

[Penguin68]

You appear to be confusing a car alarm (sounds/ flashing lights when doors are opened and/ or there is movement in the car) with a car immobiliser (car won't start unless correct wireless tag is present).