Interesting, here's a video that's making the internet rounds with a ton of information on "bump keying" - a simple way to open a variety of locks with a key in which all the cuts are maximum depth and then, well you bump it - [via] - Link & TOOOL (The Open Organization of Lockpickers) have a PDF. A quick search on eBay turned up these... Good to know, might be a good idea to test your locks with this technique - if you can get in, it's time to replace those locks.