The pursuit of lock picking is as old as the lock. But there was only one brief moment, lasting about 70 years, where you could put something under lock and key and have complete certainty that no intruder could get to it.
Picking a lock is surprisingly easy with practice. So the makers of this mystery bike lock came up with a brilliant and novel solution: bury the keyhole deep inside the lock mechanism. It's un-pickable, because you simply can't get your picks into the lock. And it's got lock picking hobbyists stumped.