What happens to you if you change computers, you reinstall your operating system ... Ben after three times, you can not use this game. You will be taken to a naughty pirate and you must cry hotline EA begging them to please you allow an additional activation. And if EA stops its activation servers, well you just can NOT play this game.
So be careful, you do not buy this game, YOU RENT as activation servers are active.
A strongly discouraged as this protection is active.