Holding out is when a player secretly takes a card (or cards) out of the deck, and switches them in later during a hand. While this might sound bold (or difficult), it’s relatively easy to accomplish. A cheater can simply drop his hands below the table, remove a high pair from his hand, and slip them under his leg. He then declares he’s dropping out of the hand, and discards his remaining cards. The high pair is later used to create an unbeatable hand.
Protection Tips: First of all, begin each game by counting the cards in the decks you’re using, even if the cards are brand-new. Cheaters who hold out often remove the cards before the game, and then patiently wait to bring them into play.
Second, make it a rule that players cannot take cards out of sight at any time. This includes during the shuffle (some players like to shuffle on their legs) and during play, when everyone is holding their hand. Cards stay on the tabletop. Period.
Third, when a player discards his hand, it is the dealer’s responsibility to make sure the proper number of cards have been discarded into the muck.
Adherence to these rules will make it difficult for a player to hold out during a game.