If a bike is stolen from the street, a car or home, the owner needs the serial number to report the theft to the police. Most people don't keep this number handy. However, when a bicycle is registered the police can recall information quickly from the computer. The registration records are cross-referenced by name as well as by serial number and registration number.
Registering your bike greatly increases the likelihood it will be returned to you if recovered. Bicycles that are registered have a much greater chance of being returned to you if they are lost or stolen and then recovered; bicycles that are not registered have a limited chance of being returned to you if they are recovered.
Any questions, please call the non-emergency number at (630) 668-2167.