With Find My Device, one can locate their stolen device if they have connected their Microsoft account to that device and have enabled Find My Device. If you want to remotely Lock or Unlock a Windows ...

You can change the lock screen on your Windows computer by customizing the background image and specifying what supplemental information it displays.

If you're new to Mac computers, a good first step is figuring out how to lock your Mac to keep it secure from intruders.