Dal Negro is a durable plastic playing cards which are made from foreign countries, our skillful technicians can mark them as contact lenses marked cards and scanning playing poker cards.
Usually, We mark Dal Negro playing cards to marked cards for invisible ink pen contact lenses as well as side barcode marked cards with our best luminous invisible ink. For invisible ink contact lenses marked cards, we mark different markings on the backside of Dal Negro marked poker cards and them only can be read by invisible ink contact lenses or marked cards glasses.
For side barcode marked cards for poker analyzer, the invisible ink barcode markings will marked in the four sides of Dal Negro marked deck of cards, these marks can not be saw by naked eyes, and only the playing cards scanning camera or poker analyzer with built-in playing cards scanner can read and forecast the game result for users in accuracy.