Have you ever wondered how keys work? I teach a course in computer security where we learn how locks function – and also how they can be broken or bypassed. We do this because locks teach important ...

One way to lock a Windows computer from your keyboard is by pressing Ctrl + Alt + Del and then selecting the "Lock" option.

So you want a smart lock. Maybe you want to lock your door without leaving the bed, or maybe you prefer key codes instead of keeping track of physical keys. Smart locks are great for these things, but ...