The new Ramset guns are surprisingly quiet. Certainly, the police won't be called, and there's not much of a risk to the thief.

This is because unlike a gun, there is no need for the gases to release to the outside openly. Therefore, there is much, much less noise, and it doesn't sound like a gun at all.

Do you have lots of experience looking at reports of stolen bikes? I have heard exactly the opposite in my major metro area. My sources are law enforcement and bike clubs.

Nobody will stop you in San Francisco.