This isn't a computerization of the game, its a computerization of the recording of the game. Big difference and has nothing to do with computer chess engines. It could be used to detect cheating by comparing played moves to engine lines. Also a board camera isn't the the only way this could be implemented, rfid's in the pieces or a pressure sensitive board would both work. Players could still take their own game notes. It would also eliminate errors in the recording of the game and provide records for blitz and time pressure situations.