So, What is a Control Key for a Lock Anyway?
If you've ever managed a building or worked in a large office, you might have asked yourself what is a control key for a lock and why it's different from the one you use to get through the front door. At first glance, it looks like any other key. It's got teeth, a bow to hold onto, and it fits into the same keyhole as your standard operating key. But if you try to turn it to unlock the door, usually, nothing happens. That's because its job isn't to let you in; its job is to take the lock apart. ...