And, you can't if the publisher doesn't allowed it.
as I said, that is a shoe yet to drop IMO, you may see half of the big games have used sales restrictions on PS4 publisher edict (with retailer)...
David Jaffe tweeted the night Ms revealed its policy that "Devs would prefer to absolutely restrict rental and used games in the 2 month release window"
so they did not say anything tonight that would stop that as well as pubs specifically having restrictions... you guys can get high on the bubbles tonight, I grant you that, but this is a long long process, with lots of turns.