infrared invisible ink for poker card
Only Visible Under Infrared Glasses and Filter
Infrared Absorb Invisible Ink is a kind of Anti-forgery Ink. It is
invisible with our naked eyes.When you put an infrared filter,lens,glasses or infrared camera to your eyes,it will be visible and you can see what you print on
Infrared wavelength: 880nm/810nm/770nm/650nm Which one do you need?