No alarm or chain will stop them Jacking you at the lights. ??

Yep! I have often thought I would just flick the run switch, hop off and bolt. The only drawback to that is when they work out they can't start it, they will most likely drop the bike, and damage it. Small price to pay if you really want to keep your scoot I guess.

If you switch the bike off and bolt with the fob in your pocket, they can't start the bike.