Does the copy of the game bind to the account?

[ZohnoReecho]

Each Square Enix account can have multiple Service Accounts.
Each Service Account requires a platform (PC/PS3) code for each platform you intend to play that account on.
So in your case, until SE sells the code only (if they will), you need to make a new Square Enix/Service Account for your brother and buy a PS3 copy for him.

[GrieverVIII]

I see, that is unfortunate. Well, in any case, thank you for the information.