I have been thinking about security for ages on the van and what sort of alarm to use. im thinking of getting an old iphone and installing software like this:
https://itunes.apple.com/sc/app/tang...345279970?mt=8
to act as remote for the stereo and then also have the "find my Iphone" app so i can get real time updates on location of the car if needed. I'm sure it would be very easy to hide a phone!