Vehicle, Mobility and Transportation Design Union Bicycle Lock by Lyuting Ma This is a convenient new design of a bicycle lock. It has three innovations: fingerprint unlocking, magnetic attachment and reflective warning. The lock breaks the form limitation of traditional bicycle by the way of creatively combining the lock and the seat post. Fingerprint unlocking prevents problems associated with losing keys. Magnetic attachment can make sure that the bicycle lock is firmly affixed to the the seat tube.