Quoted from kpg:

It would be awesome if you are playing with a couple friends who are linked to the game, and if they hit a shot that they are supposed to avoid, it allows a "security breach" or "firewall disabled" mode for X amount of seconds, and your friends can "hack" the game for a specific amount of time and mess with you. That would be awesome, allowing other players to look for cues on the big LCD and get the opportunity to play and effect the game while standing and watching their friends play.
Maybe even something like "Player 2 hack opportunity" and there is a mini game on their phone that pops up, and they need to quickly complete it to breach security and then allow a random player to screw with the machine.