How to detect cheating cards?

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Cheating cards exist ever since the poker playing cards exist. There are always cheating and anti-cheating while some want to win more in the games!

​In daily life or games, cheating cards are quite popular use. People might use the special cards for cheating in poker games or magic shows and so on. Someone said they don't want to cheat their friends in private games, however, the cheating cards are common in some personal clubs and casinos. People object to cheat at games and all other occasion and take some measures to stop cheating. However for fun, pleasure, honor or money, there are always some cheating and it is unavoidable. From this passage, you can know how to detect cheating in casino, especially detect cheating cards.

What is the cheating cards

​First of all, I want to introduce what is cheating cards in brief. Poker cheating cards includes many types of marked cards, such as original marked deck of cards, invisible ink marked cards or luminous marked cards, barcode marked cards and so on. Many of these marked deck of cards have their own “readers” so they can be identified by looking at the back of the card or by scanning device with the related reader device.

​Take the luminous ink cheating marked cards for example, they might have several kind of marks on the back, including the big marks of suits and numbers, small marks in 4 corners or white sides and so on. The cheating marked playing cards look the same as the ordinary poker cards without marks. Just that the back markings reveal the suit and number via infrared ink detectors. Besides, the cheating marked playing cards expiration date can be as long as six month. These cheating marked playing cards can pass the famous riffle test in the house so they are so safe that professionals cannot detect it, not mention to others.

​There are various ways that people might mark cards for cheating recently. One of those common and easy way for marking cards is to put a nail mark into the card or squeeze the card between the thumb and forefinger. Other methods include crimping the corners, grease marks, dirt marks, etc. Most of gamblers would take invisible ink marked cards to cheat. Basically special dyes can be added to cards which is invisible to the naked eyes, but can be seen with infrared camera or special contact lenses. 

​If the marks was made from their appearance, such as fold its corner, it is easy to detect by carefully observe. Another way to detect a marked deck is by ‘watching the movie’—doing a Riffle test. Hold the deck and riffle through the cards while looking at different areas of the backs. This is the way the old Filp Books would work, giving the illusion of animation. If you see spots or lines jumping around, that’s a pretty good indication that there is been a modification to the back design.

How to detect the invisible cheating marked cards

​Next, I would like to tell you how to detect the type of invisible ink cheating marked cards.
Every casino has dealers who is trained to report suspicious behavior that may allude to cheating.
However, they are also may be cheated by some professional players who use marked cards deck perfectly.
What is the perfect device to read the marked cards with luminous ink? The best choice is infrared contact lenses or perspective sunglasses, which is the most convenient way to read the invisible ink marks. Infrared contact lenses are specialized in reading the marks on the back of playing cards while human eyes cannot see. And here are different colors top quality and cheap price contact lenses for sale in our poker shop. If you never wear the contact lenses before, the infrared or UV sunglasses also can meet your requirement.

Here are also some things you should observe when checking for card cheats.
1．Check for any objects on or near cards: it can be any object including a mobile phone, or even a fade stack of chips. Use the same lenses worn by cheats to spot marked cards.
2．Observe your opponent's partners or associates: usually cheats work in teams. By observing your opponent's associates , you can see if there is potential collusion.

​All in all, cheating in poker game is unavoidable, what we can do just use some devices to detect it, and there are various type of devices to detect cheating cards, you can choose a device which is the most suitable for you.