immobilizer or kill switch
I'm thinking about getting a kill switch installed (a physical switch that needs to be set to "on" for the car to start") or an immobilizer (to my understanding is another key on my keychain that has a computer chip which holds a unique code, and in order for the car to start, that chip needs to be present).
Which do you think I should have installed? Do these immobilizers even exists/are they useful (I have found this link, but seems iffy: http://safetyfirstdmk.stores.yahoo.net/autim.html)? Are immobilizers easy to crack? Are kill switches so common that thieves would look for them, or look at the wiring under the dash and notice one is installed and then look for it/follow the wires?
Either way, I would have a professional install it, but wondering your opinion.