Locking motor to bike

Whoa! I stand corrected.
My bike is parked downstairs, under my window at work, luckily...but I may pick up the shock-sensor.
My buddy had his bike stolen from the local library. Before he could call the poice, the police already had the thief in custody. The thief didn't know how to run the engine and was pushing it down the road. The police are accustomed to seeing my friend on his bike and they knew the bike didn't belong to this guy.
Motorcycles and bicycles are stolen around here all the time. If a thief wants it, it's gone.
Security is a real issue. I'll keep watching for some good idea's.
Kudo's to DeLand's finest!