Infrared contact lenses
Being one of the best cheating playing cards readers or detectors, infrared contact lenses is not any secret so far. Quite a lot of people know that infrared contact lenses can see invisible ink marks of the marked poker cards. Nowadays, infrared contact lenses is still one of the most popular poker cheating device with marked cards though some said too much people know about it. With the high quality marked cards contact lenses, it's still safe for the users because the professional infrared contacts can suit both the dark color and light color eyes well and won't change the eye color at all, so others won't find the special contact lenses in the eyes easily.