The fluorescent back marks are normally invisible to human naked eyes, but, with necessary supplementary light, they can be clearly seen on a monitor screen having been scanned by the corresponding one-to-one poker camera. It’s not possible to make that happen by wearing poker perspective glasses ( contact lenses or sunglasses ).
The fluorescent marks printed on the card backs can stay unfading as long as 2 years. They are water-resistant and wear-resistant, capable of being scanned by our poker cameras even after we rub the the cards against the table or immerse them in water. Such back marked cards we make have no chromatic aberration compared to the original playing cards in spite of the fluorescent marks.
If you are interested in using our playing cards with fluorescent back marks, welcome to contact us for them! We have many different kinds of card decks for your choice, such as Aviator Pinochle, Bee No.92, Bicycle 808, KEM Arrow, Copag 1546, Fournier 2818, Modiano Acetate, Da Vinci Route and so on.