Though often dubbed a "doorknob," the device that we use to open and close a door is truly a "lock set." This might be a bit confusing since not all lock sets are equipped with a lock. A doorknob ...

It used to be that to get into your home, you needed a key. If you lost that key, you either had to call a locksmith (or maybe your landlord) or break into your own home. If you happened to be 10-year ...