While some players have been complaining adamantly about markings on decks, others insist it is a non-issue. Longtime poker veteran Mike Caro noted, "I have not noticed any marked decks, and I am usually very vigilant about looking for that. I have found them satisfactory so far. "
Many people are in the same situation. They know nothing about the marked cards and don't doubt about the cards at all. However, marked cards are quite popular use in poker games now and it's easy to be cheating in the gambling. It's necessary that you use the marked cards contact lenses
or poker infrared sunglasses to detect the invisible ink marked cards for self-defense.