I'm thinking of having a PC for an alt in warcraft output the video, and have another PC process the video frames and send out PS/2 keyboard or mouse signals to reposition the alt until the red target is in the center of the screen (an auto-follow for enemy targets). It would only be used for melee alts in PVE instances and any tells to my alt would be forwarded to me, playing the main character. Is this legal, and how could they tell that it was a computer using the keyboard and mouse and not a person?