As previously revealed Xbox One will allow users to share their library of games with up to ten family members, however according to Spencer these ‘family members’ don’t necessarily need to be blood related.
“I think the policy makes sense, Phil Spencer told Penny Arcade (via OXM).
“It’s not ten different people all playing the game concurrently, but when you think about a real usage scenario, and we thought about it around a family, and I know certain people will create a family group of people that aren’t all part of the same family. And I do think that’s an advantage, and people will use that.
“I saw it on NeoGAF instantly, the Xbox Family creation threads, where people said ‘Hey be a part of my family’. No birth certificates will need to be sent in. I do think that’s an advantage of the ecosystem that we have.”
It’s already been confirmed that two people in your ‘family’ will be able to access the same files simultaneously although we are unsure if this relates to full ‘retail’ games, ‘arcade’ titles or both.
“a family member can play your copy of Forza Motorsport at a friend’s house. ONLY NOW, THEY WILL SEE NOT JUST FORZA, but all of your shared games.”
I believe we can refer to Forza as a “Full Retail Game”.