A skeleton key, one that can open any lock, is normally something confined to the realms of films and television. But two engineers claim to have devised a 3D printed ‘bump key’ that, with a bit of ...

Chances are, your home’s front door is vulnerable to a crime that can be accomplished by a novice: lock-bumping. With a specially cut “bump key” and the well-timed whack of a hammer, someone can ...