Ahead of E3 2013, Microsoft released an official statement clarifying some of the most debatable aspects of Xbox One.
In that statement, Microsoft clarified Xbox One used games trading and sharing policy for the first time.
"Trade-in and resell your disc-based games Today, some gamers choose to sell their old disc-based games back for cash and credit," the document reads. "We designed Xbox One so game publishers can enable you to trade in your games at participating retailers. Microsoft does not charge a platform fee to retailers, publishers, or consumers for enabling transfer of these games."