Adding or removing lines or patterns on the back of the cards is the most common method, but there are many others as well, such as block-out work, cut-out work, scroll work, shade work, tint work.

With the appearing of the first designs on the back of the cards, the cheaters started to alter the designs by using various inks or pigments. By punching holes through the middle of the cards they sell to tourists, the casinos are trying to protect the game tables, from cheaters who are slipping favorable cards into their hands when playing.Īctually the first marks on the playing cards were crimps, bends or even tiny bumps, called blisters that resemble the Braille script. No matter the effectiveness of the card marking, many casinos have adopted a method to prevent cheating. Sometimes additional manipulative skills are needed to steer the desired cards into the correct positions. When using this method, the cheater marks the cards by crimping.Ĭard marking is often used to cheat when gambling or for card tricks, regardless of who shuffles and deals the cards. The easiest way to mark probably is called card bending. Usually the distinguishing mark or marks are done on the uniform back side of the playing cards, and in this way the effectiveness of the cheating is guaranteed. After the marking process, the marked cards can be used for magic tricks on one hand, or for cheating in a variety of poker games, on the other. This is a very effective cheating method as the marks are apparent only to the conspirator. The process of altering playing cards is known as card marking. Invisible marked cards are considered unparalleled cheating playing cards in Baccarat. Dal Negro San Siro Invisible Playing Cards

Marked playing cards