The Mackinaw Police Department offers residents the ability to register your bicycles (tricycles, scooters, etc.) with us. This is a cost free service. Once registered, a sticker with identification number as well as the Police Department number will be affixed to the bike. Should your bike get lost or stolen, the finder will be able to contact the Police Department and Officers will be able to return your bike to you by looking up your registration from the registration number. All you need to register is your bike!