Ever seen a lock with a round key and thought what wizardry it is? That’s a tubular lock, although some folks call it an Ace, ...

Mechanical locks secure doors as either deadbolts or door-handle devices. Keys serve as the means to unlock these mechanical locks, and possessing a working key determines who can access secured areas ...

I’ve always wondered: Are keys really truly unique? Eventually, somewhere, my house key has to work on another house, right? Your key will probably work on another home — and another person’s key ...