This is how a poker TV table actually work now. Each card has an HF RFID tag, each position has one antenna where players must put card when not seeing them. In addition there is another antenna in the middle of the table to read the common cards. In the past mini cameras were used for each position in combination with OCR to decode the cards. This sort of tables require collaboration from the players and from the dealer to obtain something useful to show on TV. They are instructed before the game.