Marked luminous ink cards can be classified into back marked cards and special light marked cards.
Normal infrared playing cards are hot sale in the marked, because it is good quality with a reasonable price. Moreover, you can see the invisible marks simply with infrared contact lenses.
While special light marked deck is using with long distance IR camera. And you need a partner to tell you what the playing cards are by mini spy earpiece. So, infrared light juice cards are more suitable used in private poker room.
Which kind of invisible ink juice deck are you interested in? Contact lenses marked cards or IR camera marked playing cards?