xtracto writes "The Inquirer has an interesting piece about a new Sony Patent on a technology that may possible prevent DVD disc media users from using their purchased disks in other machines after they have used them on a specific reader. Commentary also available on Joystiq. From the Article: 'While many are aware of the double profit companies make on pre-owned games, this would ensure the death of trading games between friends and even going to a friend's house to play a little multiplayer.'"
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