Luminous ink reader kit

 Three items of the luminous ink reader kit is very popular in the marked cards market, including the luminous ink kit (to make marked playing cards), the luminous ink glasses (to view the invisible ink markings), and the luminous ink reader contact lenses (to see the luminous ink marked cards during games). 

For the marked cards players, some would like to play the marked cards with infrared contact lenses while others like to marking the playing cards for the luminous ink reader themselves. Usually people  can get the luminous ink or invisible ink pen to mark the cards and wear the luminous ink glasses or Luminous ink contact lenses to see the invisible ink marks.