PC style registration code I bet, now the only question is if you will have to go online to register the games or not, only around 70% of 360 users are connected to the internet so I doubt they will go that far. It could just be a mandatory online pass or more likely they will take it a step further so you will need to register your game to get achievements/play online/get patches.
Or there is a small chance that the console will be 100% DD
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