What devices do people use to protect their bikes? At home I have a locked garage, so I'm mostly worried about it parked when out and about. The bike itself has a 'lock' key position which prevents it from being steered. I also went out and bought a disc lock today. When would people use a big chain/cable, versus a disc lock? One thing I hadn't thought of was people sitting on the bike. Therefore I assume a loud and unpleasant alarm would deter people from doing so? How do you fit such an alarm to a bike and how would you operate it? With a remote like a car?