Card marking

Last updated
Peczarski's 1845 work Card-sharpers by candlelight, depicting a card whose back has been marked, possibly using wax to add lines which become slightly visible when reflecting light Peczarski Card-sharpers.jpg
Pęczarski's 1845 work Card-sharpers by candlelight, depicting a card whose back has been marked, possibly using wax to add lines which become slightly visible when reflecting light

Card marking is the process of altering playing cards in a method only apparent to marker or conspirator, such as by bending or adding visible marks to a card. This allows different methods for card sharps to cheat or for magicians to perform magic tricks. [1] To be effective, the distinguishing mark or marks must be visible on the obverse sides of the cards, which are normally uniform.

Contents

Casinos alter playing cards used at table games before they are sold or given away to prevent cheaters from buying them to cheat at table games. CasinoCards.jpg
Casinos alter playing cards used at table games before they are sold or given away to prevent cheaters from buying them to cheat at table games.

Card marking is often used to cheat when gambling or for card tricks. Many casinos, particularly those in Las Vegas alter the decks of cards they sell to tourists – either by punching holes through the middle of cards or trimming their edges – to prevent cheaters from returning to the game tables after buying the cards and then slipping the favorable cards into their hands when playing.

Marked cards can be used regardless of who shuffles and deals the cards. Some more sophisticated marked-cards scams involve additional manipulative skills to steer the cards into the correct positions once the desired cards have been identified.

History

The first attempts to mark playing cards involved bends, crimps and tiny pinprick bumps known as "blisters", resembling the Braille script. Later, when the first designs appeared on the backs of playing cards, cheats began altering the designs on the backs of cards. Hustlers have used various inks, pigments and scratches, to add or remove lines or patterns from the back of the card design. Some varieties of card marking include block-out work, cut-out work, scroll work, shade work and tint work.

More recently, science and technology have also enhanced marked-card techniques. Modern technologies are variations of shade techniques.[ clarification needed ] Traditional block-out and 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[ clarification needed ] is that they can be read close-up or from across a table.

Processes

Block-out

Block-out work is simply using the same color ink as the back of the card and coloring in small white areas of the card. For example, sometimes people add ink to the flowers on the back of a card by making the petals narrower or blocking out a bird on the back design.

Tinting

By subtly tinting different body parts of this small "angel" feature on the back of a playing card - the head for an ace, the left wing for a king, etc. - the card's rank can be discerned. The two is left unmarked. Tinting guide for marked playing cards.jpg
By subtly tinting different body parts of this small "angel" feature on the back of a playing card - the head for an ace, the left wing for a king, etc. - the card's rank can be discerned. The two is left unmarked.

A more subtle variation on blocking, card backs can be marked by lightly tinting certain areas of a detail. Rather than blocking out the entire petal on a flower detail, the petal is washed with a light ink of a similar colour to the card ink.

Cut-out

Cut-out work is use of a razor to scrape off some of the printed areas of the card, such as adding (cutting out) a white bird to the back design.

Shading

It is not necessary to mark the entire deck in order to gain an advantage in most types of poker - even marking just one rank (especially the aces) is enough to gain a significant advantage in a game such as Texas hold 'em.

Detecting marked cards

Some marked cards can be identified by performing the gamblers' riffle test (also known as "going to the movies"). [2] Looking at the back of the cards while they are being riffled, the marks will "dance" around the back of the cards, provided that the viewer knows what sort of marks to look for. The riffle test is less effective for detecting cards marked with luminous and juice methods.

Reflected light off the back of the card will reveal cut-out work (scratches or white ink), as well as many inks or solutions that tend to dull the finish on playing cards because they are alcohol-based. Only the highest quality solutions will not burn the finish of cards. Placing a drop of alcohol on a card and then looking at the finish by reflecting light off the back reveals the dulling effect that these cheap solutions can cause.

Related Research Articles

In card games, a burn card is a playing card dealt from the top of a deck, and discarded ("burned"), unused by the players. Burn cards are usually not shown to the players.

<span class="mw-page-title-main">Blackjack</span> Gambling card game

Blackjack is a casino banking game. It is the most widely played casino banking game in the world. It uses decks of 52 cards and descends from a global family of casino banking games known as "twenty-one". This family of card games also includes the European games vingt-et-un and pontoon, and the Russian game Ochko. Blackjack players do not compete against each other. The game is a comparing card game where each player competes against the dealer.

<span class="mw-page-title-main">Card game</span> Game using playing cards as the primary device

A card game is any game using playing cards as the primary device with which the game is played, be they traditional or game-specific. Countless card games exist, including families of related games. A small number of card games played with traditional decks have formally standardized rules with international tournaments being held, but most are folk games whose rules may vary by region, culture, location or from circle to circle.

<span class="mw-page-title-main">Playing card</span> Card used for playing many card games

A playing card is a piece of specially prepared card stock, heavy paper, thin cardboard, plastic-coated paper, cotton-paper blend, or thin plastic that is marked with distinguishing motifs. Often the front (face) and back of each card has a finish to make handling easier. They are most commonly used for playing card games, and are also used in magic tricks, cardistry, card throwing, and card houses; cards may also be collected. Playing cards are typically palm-sized for convenient handling, and usually are sold together in a set as a deck of cards or pack of cards.

<span class="mw-page-title-main">Shuffling</span> Procedure used to randomize a deck of playing cards

Shuffling is a procedure used to randomize a deck of playing cards to provide an element of chance in card games. Shuffling is often followed by a cut, to help ensure that the shuffler has not manipulated the outcome.

<span class="mw-page-title-main">Cut (cards)</span> A procedure to split a deck of cards by someone other than the dealer

In card games, to cut the cards is to split the deck into two packets by lifting one packet from the top and placing it face down beside the remainder; before placing the lower packet on top of it. This is typically done after the cards have already been shuffled, and the procedure is used just prior to the cards being dealt to the players. The aim of this is to reduce the possibility of cheating, for example, by knowing the bottom card. Cutting the cards is also a common way of determining the seating order at a card table, the partnerships or the first dealer.

<span class="mw-page-title-main">Cheating in poker</span> Overview of poker cheating

Cheating in poker is any behavior outside the rules of poker that is intended to give an unfair advantage to one or more players.

<span class="mw-page-title-main">Faro (banking game)</span> French gambling card game

Faro, Pharaoh, Pharao, or Farobank is a late 17th-century French gambling game using cards. It is descended from Basset, and belongs to the Lansquenet and Monte Bank family of games due to the use of a banker and several players. Winning or losing occurs when cards turned up by the banker match those already exposed.

<span class="mw-page-title-main">Card counting</span> Blackjack strategy used to determine advantage in upcoming hands

Card counting is a blackjack strategy used to determine whether the player or the dealer has an advantage on the next hand.

<span class="mw-page-title-main">Card manipulation</span> Branch of magical illusion that deals with sleight of hand involving playing cards

Card manipulation is the branch of magic that deals with creating effects using sleight of hand techniques involving playing cards. Card manipulation is often used in magical performances, especially in close-up, parlor, and street magic. Some of the most recognized names in this field include Dai Vernon, Tony Slydini, Ed Marlo, S.W. Erdnase, Richard Turner, John Scarne, Ricky Jay and René Lavand. Before becoming world-famous for his escapes, Houdini billed himself as "The King of Cards". Among the more well-known card tricks relying on card manipulation are Ambitious Card, and Three-card Monte, a common street hustle also known as Find the Lady.

Second dealing is a method of manipulating a deck of cards during a card game by way of dealing the second, rather than the top card of the deck, usually for the purpose of cheating. Second dealing and bottom dealing are also used in performance magic.

A trick deck is a deck of playing cards that has been altered in some way to allow magicians to perform certain card tricks where sleight of hand would be too difficult or impractical.

<span class="mw-page-title-main">John Scarne</span> American magician (1903–1985)

John Scarne was an American magician and author who was particularly adept at playing card manipulation. He became known as an expert on cards and other games, and authored a number of popular books on cards, gambling, and related topics.

Cheating in casinos refers to actions by the player or the house which are prohibited by regional gambling control authorities. This may involve using suspect apparatus, interfering with apparatus, chip fraud or misrepresenting games. The formally prescribed sanctions for cheating depend on the circumstances and gravity of the cheating and the jurisdiction in which the casino operates. In Nevada, for a player to cheat in a casino is a felony under Nevada law. In most other jurisdictions, specific statutes do not exist, and alleged instances of cheating are resolved by the gambling authority who may have more or less authority to enforce its verdict.

Onslaught is a Magic: The Gathering expert-level block. It consists of the expansion sets Onslaught, Legions and Scourge. The block's main theme is creature types, and much of the game play concerns interactions between these "tribes". The story continues the saga of the Mirari from the previous block of expansion sets. Onslaught was the last block printed before the "modern" card face style was introduced.

Gameplay of the collectible card game Magic: The Gathering is fueled by each player's deck of cards, which constitute the resources that player can call upon to battle their opponents in any given game. With more than 20,000 unique cards in the game, a considerable number of different decks can be constructed. Each card is designed to have certain strengths and therefore a significant part of the game is determined by which cards a player chooses to include in their deck. Broadly speaking, decks can be loosely classified based on their play style and mode of victory. The game's designers often explicitly create cards which are intended to fuel one or more of these given archetypes, in order to create competitive balance and diversity.

This is a glossary of conjuring terms used by magicians.

<span class="mw-page-title-main">Poker dealer</span>

A poker dealer distributes cards to players and manages the action at a poker table.

Card advantage is a term used in collectible card game strategy to describe the state of one player having access to more cards than another player, usually by drawing more cards through in-game effects to increase the size of their hand. Although it applies to several collectible card games, the concept was first described early in the evolution of Magic: The Gathering strategy, where many early decks relied on a player drawing more cards than their opponent, and then using this advantage to play more cards and advance their position faster than their opponent. By 2007 it was recognized as one of the most important indicators of who is ahead in a game and has been utilized in the development of strategy for nearly every collectible card game created.

<span class="mw-page-title-main">Edge sorting</span> Advantage gambling technique

Edge sorting is a technique used in advantage gambling where a player determines whether a face-down playing card is likely to be low or high at casino table games by observing, learning, and exploiting subtle unintentional differences on the backs of the cards being dealt.

References

  1. Why Do Magicians Use Marked Decks?. PlayingCardDecks, February 15, 2022. Retrieved 15 March 2022.
  2. Marked Deck Basics. PlayingCardDecks, March 17, 2020. Retrieved 14 August 2021.

See also