We use state-of-the-art technology and equipment to print invisible ink marks on the back of marked decks. Despite after marking, there is no difference between marked poker cards and the normal playing cards. Invisible marks will show under infrared contact lenses.
Da Vinci marked cards is durable, washable and can stay as long as one year. Each set of cards is available in two colors and sizes. Red and blue, or wide and narrow.
