this is just asking for trouble
http://kotaku.com/5972787/sony-patent-could-stop-you-from-playing-used-games-possibly-on-the-next-playstation
>A patent application published today resurrects the rumor that Sony's next gaming console will suppress the playing of used games, and outlines how such a scheme would be accomplished without the use of an always-on Internet connection for verification. In short, an RFID ID stamped onto the new discs would track their usage history and restrict them to one console.
>Sony's technology would check a game disc's RFID tag, which is capable of remembering if that game had been linked to a different machine or account. This check is performed offline and before the game is played.
and here's the patent
http://www.freepatentsonline.com/y2013/0007892.html
this is gonna get messy since they stopped making the ps2