A better idea would be something like LoJack for a bicycle that fits in the stem underneath the seat. It would transmit on a frequency which can be picked up b

A better idea would be something like LoJack for a bicycle that fits in the stem underneath the seat. It would transmit on a frequency which can be picked up by the police and in theory you should be able to get your bike back fairly quickly. Alternatively, it could have a cel connection (like whispernet for a Kindle), and any time it picks up a frequency it could send out its GPS coordinates or triangulates itself. Either way, technology is the solution, not registering your bicycle. Most cities have registered bikes for years (in Palo Alto I believe there is still a law on the books making it mandatory, but it's never enforced), and very few bikes ever get recovered. You're better of perusing Craig's List to wait for someone trying to sell your bike and just go and steal it back.