What does it mean to mark cards in poker?
Card marking is the most common way to cheat in poker. This practice involves altering cards in order to make them appear differently to an honest player. The practice is illegal and could result in a fine, or even jail time. However, it is still used by some players in a variety of situations.
Marked cards, also known as cheating playing cards, are marked with invisible ink. Invisible ink can only be seen through special glasses or certain lighting conditions. Cards can be marked in a variety of ways, including by coloring or scratching a small part of the design on the back. Cards can be marked with luminous dye or paint on the edges. In recent decades, people have developed new methods of printing invisible marks on playing card based on optical and chemical scientific principles. These are different from the original systems. This new type of invisible ink can be used to mark both paper and 100% plastic poker cards, and the hidden marks are difficult to detect without a special tool like invisible ink contact lenses, luminous sunglasses and IR camera, etc.
There are a few basic ways to mark cards in poker, and most of them involve making the important cards stand out. A cheater could, for example, bend the corners of an ace or king to give themselves an advantage over their opponent. This is a simple technique that is easy to do on the spot and is effective in giving a cheater an edge. Professional poker cheaters use more sophisticated techniques, but they are much harder to implement in a home game.