Here’s a video of Holler using a 3D-printed bump key to open an ... a printable 3-D CAD model. Weyers' technique, he says, wouldn't even require knowing the lock's make or model.

He could have had the building super replace the lock, for a fee of course. Instead he had his parents email a photo of the key, which he used to 3D print ... bump key model to Thingiverse.

"But if someone reported it that my 3D models ... approved lock made by companies such as Master Lock, Samsonite and American Tourister. The Github release of those printable master key files ...