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Card marking is the process of altering playing cards such that the suit, rank or both are only apparent to the person marking the cards or potentially another conspirator. To be effective the distinguishing mark or marks must be done on the obverse side which are normally uniform. Card marking is often to cheat when gambling or for card tricks, though many casinos, particularly those in Las Vegas, punch holes through the middle of cards they sell to tourists to prevent cheaters from returning to the game tables after buying the cards, and then slipping the favorable cards into their hands when playing. Some typical Anglo-American playing cards. ...
Gambler redirects here, for other meanings see The Gambler // Gambling has had many different meanings depending on the cultural and historical context in which it is used. ...
Lance Cpl. ...
This article is about the city of Las Vegas in Nevada. ...
Unlike fake deals like seconds, bottoms and false shuffles, the use of marked cards can be used regardless of who shuffles and deals the cards.
Historically, marking cards involved altering the design on the back of a deck of cards. people have tried using ink, scratches, etc. to add or remove lines/patterns from the back of the card design. Some buzz words include block-out work, cut-out work, etc.
However, more recently science and technology have also enhanced marked card techniques. The most "state-of-the-art" technology are variations of "Shade" technology. These new technologies are the most deceptive / futuristic methods for marking cards. Traditional block-out and/or cut-out work have the disadvantage that they must be read "close-up" because the marks are small. On the other hand, another advantage of luminous and juice marked card technology is that they can be read close-up or from across a table.
Shade technologies:
- Luminous marked cards - can only be read by using special gimmicked sunglasses or by wearing contact lenses.
- Juice marked cards - marks are only visible when a person is trained to read the marks (no filtered sunglasses are required, but some practice is required to read the marks.)
- Tintwork - uses Juice solution to mark cards, but the marking patterns vary depending upon the back design of the cards being marked.
- Juice Dust / Daub - similar to Juice and tintwork marked cards. However, a person can mark someone else's deck while they are being used and even while being watched. This eliminates the need to switch in a pre-marked deck of cards.
Detecting marked cards 1) Perform the "gamblers riffle test". This test basically allows a person to detect most marked decks by simply riffling the cards. Looking at the back of the cards while they are being riffled, the marks will dance around the back of the cards like an old-fashoned cartoon. The riffle test is less effective for detecting cards marked with luminous and juice.
2) Reflect light off the back of the card. Cut-out-work (scratches or white ink) will display, as well as many inks or solutions tend to dull the finish on playing cards because they are alcohol based. Only the highest quality solutions will not burn the finish of your cards. Placing a drop of alcohol on a card then looking at the finish by reflecting light off the back reveals the burn/dulling effect that these cheap solutions can cause.
Commercially manufactured decks The Boris Wild Marked Deck is a popular modern deck of marked cards.
See also Placeing high cards on the bottom of the deck while shuffling and dealing those cards to yourself or you teammates. ...
Second dealing is a method of illegally influencing the outcome of a poker game by way of dealing the second, rather than the top, card of the deck. ...
// Cheating in poker is any behavior outside the rules intended to give an unfair advantage to one or more players. ...
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