Exclusive invisible ink printing technology is implemented on the marked invisible ink playing cards to draw markings indicating the card details to the user. Only the user is able to see these markings with the cheating card contact lenses.
For the long life of marked invisible ink gambling cards imported plastic paper is used. These cards stay very much normal after being drowned in the water. Markings on these cards are also water proof.
1. Number and suit of the cards on the opposite corners of the cards.
2. Make a series of number and suit on the edge of the cards.