I have seen many people use methods to cheat at gambling. I have to say, some of the methods are very creative. The most common method of cheating people at gambling is by rigging the game. The most popular game used for rigging is blackjack. First of all, the dealer must be able to mark the cards, sometimes they use special glasses, they remove ink from some cards, and keep marked cards separately, after they exchange the cards in the game by manipulating the built-in card shuffler. Another way is to rig the table for faster card shuffling. A lot of shuffling machines are designed to cheat the players.