Multiple installs

[MellonCollie]

Say I wanted to install FO3 retail on multiple systems. Could I sign into GFWL with the same key on all systems at the same time? Or will that give me an error or will I get banned?

[TopGunSF]

How do you plan to play the game on multiple systems at the same time?

But no, it wont ban you. It'll just sign you out of whatever system your currently signed into as you sign into the next.