This instructional lock picking video is a marvelous teaching tool for the beginning to intermediate locksmithing student. Like most of us, I tend to think of myself as a bit of a movie critic, and I have to tell you that I found the presentation boring (I'm being kind). But, the information given is genuinely most helpful. See-through lock housings are used to allow the viewer to witness the lock being compromised. And once you can see how a lock is made and how it functions, picking a lock becomes much, much easier. 60 minutes.