If you have any doubts about someone cheating at a poker game, it is worth paying attention to their actions and body language. Observe whether they have a tendency to pick up cards from the table in different ways, and whether they are squeezing them or handling them differently than everyone else at the table. If they seem to concentrate on the cards a great deal and squeeze them in certain manners, it’s likely that they’re trying to cheat.
The way this is done is by using a special deck of cards which are marked with invisible ink and a sequence of black spots. These marks can be scanned remotely by a poker cheating device and used to determine the card’s suit and value. This is an advanced method compared to simply marking the corners on the cards. Other players can easily spot this and it is not as reliable.
Another popular way to mark poker cards is by using a stencil, which has a series of numbers that indicate the suit and value of each card. The first number, for example, indicates a Club. The second, Hearts. The third, Spades. And the fourth, Diamonds. Mark the cards on the right-hand side, as they will appear “upside-down” when they are held by your opponent.