Our bikes feature a ring lock attached to the bike frame for temporarily locking the bike when away from the rack. When engaged, this lock disables the rear wheel so someone can't ride away with the bike.
This lock uses a special non-remove key feature. While riding, the key is trapped in the lock. If riders stop temporarily to shop or dine, they can engage the lock to secure the bike and remove the key. When they use the key to unlock the bike, it stays trapped in the lock.