What is Infrared Contact Lenses and Sunglasses?
Which poker device can be used to detect invidible ink marked cards? I will recommond you with infrared contact lenses and glasses. Back marked cards is just a kind of marking playing cards which can be detected by infrared contact lenses, sunglasses and filters under the normal light.
Those infrared contact lenses marked cards has been speical processed by our company with skill technical. Although those devices is different from the normal one, but from their appearance, there is no difference! Therefore, it wouldn't arose other players' attention when you use it to detect the back marked cards which has marked with invisible ink kit. It is easy to operate as you just need to put them on your eyes, then the luminous marks on the back of playing cards can be read for you without any pressure.
About the way to keep the infrared contact lenses, there is one tip you should pay more attention to i8s that the infrared contact lenses should be keep in clear water rather in pure water or care solution. Or else, the contact lenses will Faded or broken!