Go to the high stakes poker game in the north part of The Loop. It is a Texas Hold 'Em game with a big buy in, but has lots of earning potential. Hack into the camera on the left side of the room during the game, while you are not dealing. Use the camera to check how stressed the other players are (and detect potential bluffs) and to see what cards are being dealt and held. You can then play your cards using those advantages.