[Joeboy]

A few years ago I went and bought myself the cheapest Yale type lock I could find in order to teach myself to pick it. After repeatedly failing I took it apart and discovered some of the pins had recesses that were designed to defeat this kind of attack (I think they're called "spool pins"). I never managed to put it back together again, and that was the end of my lock picking career.

[TurplePurtle]

Here's a video with more info about these anti-picking mechanisms and how to defeat them:

http://www.youtube.com/watch?v=ZQVsI4qyl3g

[tonybaroneee]

I got caught up with this guy's videos and watched all of them because they are so cool. Thanks for the share!