Invisible Ink Reflective Glasses is a pair of invisible sunglasses that can help you read the backside marked cards and magic cards. They have the same look as normal sunglasses so that no one will suspect that you are using them to cheat in poker games. They can be used in both white light and black light, indoors or outdoors. They are also safe to wear outside for protecting your eyes from the harmful sun rays.
Many invisible inks are based on household items. For example, headache and fever remedies and laxatives can be written with invisible ink. These inks can be developed by using a certain reagent. Other types of invisible ink are a bit more complicated chemical concoctions. They require a special type of lighting to be seen and they can be revealed by using a different reagent. These inks are commonly used by spies.
These invisible inks fluoresce a blue or green color under long wave ultraviolet (UV) light. They are non-transferable and can be used to number, date or sign a subject’s hand. This type of ink can be viewed with an IR sensitive camera or camcorder by viewing the reflected emission (or emitted absorption) of the UV absorbing ink under a narrow band IR illumination (715nm to 800nm). You will need one of our XNite 715nm filters and a IR sensitive camera or camcorder.
The best invisible ink sunglasses for reading marked cards should be comfortable to wear. If they are too heavy or bulky, you will be distracted in the game. They should also be resistant to scratches. Most lenses come with scratch-resistant coating but premium anti-reflection coatings will provide additional sealing properties and make the lens more dirt and oil-repellent.