The Forever Lock is an incredibly difficult lock to pick thanks to a series of features, including a hidden keyhole with an ingenious design, from an unknown Asian manufacturer. The locking mechanism also appears to be unable to be shimmed thanks to its design, thus meaning it can’t be bypassed from the shackle. The video demo of the lock comes from LockMan28, an enthusiast with a love for unique locks from Asia.
The lock functions by hiding the keyhole within a second area only accessible by placing a special key into an empty hole, rotating where the key is stored, pushing the key into the hidden keyhole, and then using a second rotating piece to actually open the lock.
images via LockMan28
via Keypicking, DamnGeeky, The Awesomer