In the first Metal Gear Solid there was a character named Psycho Mantis who had a lot of psychic/mind reading gimmicks. One such way of doing so was to input read everything from your controller and blocking all of your attacks. Another way was reading your memory card and talking about the games you play, name dropping them specifically and talking about genres. All of that is really clever on its own but to get around his input reading you had to plug the controller into the second player slot as he wasn’t able to read that “mind”.