“Do you know where you can get these things? I’d like to test them out around here. Scary!” – Eric

I suggest you watch the presentation because the guy actually makes one of these “bump keys” live for the crowd using just a file. He also suggests getting access to a computerized key cutter and simply asking for a key cut with depths 9-9-9 (“nine nine nine”).

I’m interested to try this on my own doors as well and maybe upgrade to some of the bump-proof locks before it’s too late.