Marked cards with glasses allow players to see invisible markings on playing cards. These markings can help identify the suit and value of a card, along with other information like an opponent’s cards.
Marked cards with glasses, unlike other forms of cheating in poker, are very rare and require a lot of skill to execute. It is a discreet, effective and discreet way of cheating in poker. However, it can be difficult to detect.
These cards are marked with a light reflective chemical daub, paint or other substance that reacts only to certain wavelengths of visible light. Cheats can bounce an invisible light source from a card’s back and see the markings using special glasses or contact lenses.
The chemical dabs are often colored in dark-green or black. They are often placed on the back side of a deck card and can be viewed with contact lenses or special sunglasses that have a built-in filter.
In addition, some card cheats use shade technology to mark cards by adding a slightly lighter or darker pigment in certain areas. This shade can be applied manually (brush) or mechanically using an airbrush and templates to position the marks.
A luminous ink is often used to create these markings, but there are also other ways to create them. Two common options are NU – CONcept paste (TM) and Juice DustTM. However, other types of inks may also be used.
Another option is to use a special color that can be painted on the front of your card. This material is primarily made up of pure grain alcohol and a small amount of the most durable, fade-proof dye or ink. This is sometimes called “two-way shade” and is nearly colorless, but it does provide enough tint to gray the white areas.
Some people use a mixture of luminous as well as non-luminous daubs in order to create their own marks. These can be applied to any type of card and are incredibly effective.
There are several methods that can be used to detect these markings, such as looking through a red filter, looking through a black light and doing the “riffle” test. While all of these methods will help identify the markings they are not foolproof.
A pair of red filter glasses is one of the best ways to read these markings. This will require a little practice to master but once you do it can be a very fun way to reveal a hidden numerical value and suit on a card.
You can also buy special glasses with a built-in filter to allow you to use luminous ink. These glasses are less expensive and can be used to secretly read marked cards.