Each Blu-Ray disc for an Xbox One game is embedded with an encryption code that?s read by the console. Xbox One installs a game, code-and-console information uploads to a Microsoft database, and the database checks in automatically from time to time to confirm that the game hasn?t exchanged hands.
When it does ? when a disk being installed is ?used? ? the game simply deauthenticates itself on the original owner?s console and conforms it to its new home.
Oh gosh, from what I just read, it sounds like
there can be no such thing as a Used Game on the Xbox at all!
It destroys the original game on the original account if the game and it's code are present on a different account entirely! No one's going to destroy their own game, unless they really don't like it. This isn't as bad as charging a person, but this is still pretty bad!