Invisible Ink Reflective Glasses are a very popular product for poker cheaters who want to be able to read invisible marks on the back of the cards. These glasses allow users to see the markings on the cards even in bright light.
The inks we carry fluoresce a brilliant blue or green when exposed to long wave UV light. They are non-transferable and are very easy to use with our special applicator. This type of ink is also great for numbering and dating a subject’s hand. This is often used in escape rooms / laser tag / paint ball and other fun activities. It can be a good way to add an element of excitement and mystery to a party or event.
Historically, invisible inks have been used to write secret messages on paper. Some are odorless and only reveal themselves when sprayed with an atomizer. Others require a special reagent to be developed, such as iodine or ultraviolet light. During World War II, both the Allies and Axis powers were working to develop their own invisible inks. The race was on to come up with an odorless ink that could be developed by as few reagents as possible, and couldn’t be exposed to heat or detected with iodine or revealed by ultraviolet light.
In the past, AR coatings were prone to degrading and developing cracks known as crazing and spiderwebbing. But these problems were mostly resolved by the beginning of the 2000s. Most premium anti-reflection treatments now include hydrophobic (water-repellent) and oleophobic (oil-repellent, to keep your lenses clean of grease and oils); some even have an antistatic treatment that helps repel dust and dirt.