Starting with Tiger Woods 11, Electronic Arts is including a code that you need to enter to play online with the Xbox or PS3. Nothing new for computer users as most games already do this for piracy reasons. The reason for consoles is to reduce the number of used games sales. It's only a matter of time though till they do this to the single player portion of the game making it impossible to resell games.
http://www.gamespot.com/news/6261856...pstory%3Btitle