There are so many professional poker players need the anti-poker cheating device. For example, they need a polarized ink pen to mark invisible ink marks on back of marked playing cards.
Here we can provide you many invisible ink pens. This polarized ink pen can help you save time and save money as you can mark the luminous ink according to your requirement. And these infrared luminous ink can not seen by someone who have not wear our magic contact lenses or infrared glasses.
While if you don’t know how to mark the marks on back of decks, you can mail your poker cards to us processed. We will mark your poker cards with our professional card mechanic techniques and advanced polarized ink pen.