Ever get up from your desk and find that someone has messed with your computer, changed your wallpaper, or left you a crazy message? Locking your computer is something everyone should do when stepping away, but its a simple task that is easily forgotten. If your a Mac user there is this handy utility called HandyLock. It pairs with your phone or any other bluetooth device, which is used as a “key” and when its out of range, the app will automatically lock your screen. You set the bluetooth signal strength to determine when it will lock your screen. Once its setup, all you do is walk away from the machine with the bluetooth device and once the range is hit your computer will lock. Pretty nifty.