This one's for the drivers out there, what security features do you have on your car/bike? I have a DiskLok (
http://www.disklok.com/ ) full cover steering wheel security device to stop my car being stolen, its expensive but well worth it

For my car audio, I have a removable backing plate with security chip. This means that even if the stereo is stolen, and the thieves put another backing plate on it, it still wont work because the stereo wont match the chip in the new backing plate. For my alloy wheels I have everyones favourite: locking wheel nuts

Unfortunately I dont have an alarm system, but thats something I will look into in the future.