London Singlespeed Society

This video on creating a mobile phone activated stun gun was posted as a follow up to the anti-theft Instructable. It works by attaching the stun gun battery connectors to the phone’s vibrate function thus triggering the shock by calling the phone.

The inventor (titter ye not, he’s only naked from the waist up) proposes waiting until your bike is stolen before giving the thief a little more than he bargained for (presumably first waiting for him to get stuck at traffic lights and put his foot down for maximum effect).  

I’d take it a little further and try to hook it up to something with a motion sensor – an iPhone or the like should do the trick, that way you can shock the perp automatically and get it to text you when the bike stops moving.

Of course, anyone nudging your bike while it’s locked up would get shocked too, but you can’t make an omelette without breaking some eggs.