http://kotaku.com/you-will-be-able-to-trade-xbox-one-games-online-micros-509140825
Phil Harrison:
Phil Harrison:
Here's how the system works: when you buy an Xbox One game, you'll get a unique code that you enter when you install that game. You'll have to connect to the Internet in order to authorize that code, and the code can only be used once. Once you use it, that game will then be linked to your Xbox Live account. "It sits on your harddrive and you have permission to play that game as long as you’d like," Harrison said.