There are a majority of professional poker players need invisible ink so that they can mark the invisible markings on the back of poker cards. This infrared invisible ink just cannot be seen by our naked eyes, only you wear our IR contact lenses or sunglasses can you see the markings on back of marked cards. You can mark the luminous ink on red poker cards by yourself. But it is better for you to mail your own blue poker cards to us, because it is very hard to print markings on the blue playing cards.
What’s more, we have luminous ink pen, infrared contact lenses, invisible marked cards, marked dominoes and many other poker cheating tools. Any question, welcome to contact with us.