[Steffen Wernéry] has published a video of the impressioning contest at LockCon. We learned about key impressioning at this year’s HOPE conference. You start the process by inserting a key blank into the lock. By turning the lock until it stops and then moving the key up and down you create marks on the blank’s face. Take a file to those marks to remove the extra material and then repeat the process. Once the pins are set properly, they’ll stop leaving marks on the blank. It takes a lot of skill to do this right, but you end up with a perfectly functional key. [Barry Wels] managed to win the competition in 5:30 with second place coming in at 6 minutes.