Bump Keying
From the Netherlands comes a disturbing report of a new lock-opening technique known as bump-keying. In this technique, a specially-prepared key is made which is hit with a hammer, screwdriver handle or other object; it then turns and opens the lock. Almost all locks are vulnerable to this opening method—one which leaves no trace at all, leading to many insurance companies refusing to accept claims for stolen goods. One bit of good news is that some locks are resistant, and thus over time we can expect that this technique will be provided for in lock ratings.
Tyler Larson has put up a video with instructions on how to make and use a bump key. Interesting stuff.
