You can now link your devices and apps with your Microsoft account using the link code without requiring you to enter your account details manually.

To see all the devices using your Microsoft account, you'll need to do so on the web via your Microsoft account page (there's currently no way to do it from inside Windows).

Then, if your Windows device is stolen or misplaced, go to the Devices menu in your Microsoft account on the web, select Find My Device, and view it on the map.