Yep, and you probably need to connect it through an an aftermarket cat 1 immmobiliser system. The other option is a hidden transponder receiver; but you then end up with a transponder on your key ring, which gives the game away a little. You can hide the transponder receiver under the dash, behind a trim panel etc. But it can become a pain. I have done this with our motorhome.This is something I've been pondering but it's beyond my auto electric ability I think. The worry with a secret button is that they are wise to it and would find it easily
I love landrover/Jaguars system, of the the rubber band around your wrist; but that will not help if somebody brakes into your house, and gets your keys.