I'm thinking about getting this in-dash dvd unit but the only drawback is that it does not have a detachable face. My car is parked outside a lot, so I am a little worried about something like this getting stolen. This unit does come with some sort of code security system though which supposedly locks out the entire system or something when the power is off. Anyone know what that means? Would this kinda protection be equal to something such as a detachable faceplate?