Smart locks that supplement or replace your front door deadbolt do much more than lock and unlock your door without a key. Most smart locks (and all of the locks on our top picks list) let you receive ...

They protect our homes, our cars, and our most valuable possessions--but did you ever wonder how keys work? Do you even know what the inside of a lock looks like? Check out the strangely mesmerizing ...

Explore the mechanics of the Pin Tumbler Lock, the most common type of lock. This video covers the following topics: - Parts of a Pin Tumbler Lock (00:42) - How to insert keys (01:22) - The concept of ...