there is a imobliser about, 3 of my cars are fitted with them, self arms, have to touch 2 points to access, used to be called Touch Tek, Iam looking for them again for my latest, depends on year as to what it will cut out, it can't be bypassed, if they can't start it they can't drive it, sure they can tow it, but if they do they were going to have it anway