Sometimes I've wondered if I'm just being overly cautious by taking my faceplate off -- alright, I'm not the only one! The guy who had the car before me had one stolen, so he installed the security. Now I bought a different head unit (he kept his) and take it off all the time unless I'm just going to be 5 minutes. I'm more paranoid when I go to the movies though, cuz that's where it happened before. Sorry to hear about it!