You mean you want a camera to detect when the car is being moved away or being hit when your not there?
you want a dashcam that supports parking mode
something like a thinkware F770 (might be a bit OTT for what u want, but give u an idea)
Thanks for the recommendation. When I get more serious about having a dash cam I will look into something like that. The one I ended up ordering doesn't have the Parking Mode feature but I am hoping it will suffice for the airport parking. I just want to make sure they're not joyriding it or smashing it into pot holes as they drive it to their car park.