Not sure where this would go, so hopefully this isn't the wrong area.

I have a question regarding the versions. I have the PC version of FF14; I read somewhere this also allows me to install it on PS3 without having to buy a second copy via say the PSN?

If that's the case, then can I use that copy of the game for a different account? What I mean is I have another person in my household, could they register an account of their own (and pay monthly) and then use the PS3 to play FF14 at the same time as I am playing it on the PC, since there are two different accounts, or would they need to purchase an entirely separate copy of the game?