Originally Posted by jefnvk

Another one I've heard is thieves cutting the rack itself in an inconspicuous place when it is an easier time of day, and then sticking some sort of camouflage over it (sticker, pipe, etc). Wait for people to come along and lock it up, wait for them to walk away, and then just undo the camo and slide the lock out through the cut, lock still attached to the bike for removal in a garage somewhere.