We've all locked ourselves out of our homes or offices at least once, but what do you do when there aren't any handy spare keys laying around? Well, seeing as how we live in the future, you could always 3D print one. Printing a plastic replica of a key you've already got in your possession is a piece of cake, but the real trick for the curious and the criminal alike is figuring out how to print a key that'll open locks without having an original key on hand. Wired spoke to a pair of lockpickers who did just that -- with just a photo of a keyhole, some understanding of the lock's depth and a bit of crafty purpose-built software called Photobump, security consultants Jos Weyers and Christian Holler can print so-called "bump keys" that allow them to jimmy open nearly any lock with just a bit of elbow grease.