How Marking Cards With Invisible Ink is Used in Gambling

How to mark cards with invisible ink when playing gambling

The back of a card is marked with secret marks. Cheaters can use a wide range of materials to create these marks, such as pencils, correction fluid, fingernails and pointed objects. One more advanced method is to use invisible ink. Invisible ink, a transparent coating, creates a light-diffraction when viewed through a special camera or lens. These lenses and camera are designed to read invisible markings on a card’s surface. They can only be seen by a select few.

During WWII, the Allies and Axis struggled to create inks which were odorless, could only be seen with tinted glasses and revealed by specific chemicals like iodine and ultraviolet light. The Allies eventually won the war, but continued to search for the perfect invisible ink into the 21st Century.

Today, there are numerous companies that sell decks of playing cards that are marked with invisible ink. These companies will mark decks of cards with invisible ink so that they can be used in gambling games. These companies also provide contact lenses, modified cameras and eyeglasses to see the invisible markings.

A recent video on TikTok shows a group of punters trying to play poker in a gambling establishment with cards that are clearly marked with invisible markers. The whole incident caused a heated debate with many internet users taking sides. Some punters supported the punters while others claimed the host of the game had committed a crime.