The answer to this question depends on the type of invisible ink used. There are three types: heat-activated inks, chemically-activated inks, and light activated inks. Heat-activated inks change color when heated. This can be done by heating the paper on a radiator, ironing it, or even using a hair dryer. You can also use common household items like laundry detergent and soap. Even toy invisible ink pen pens work this way.
Invisible ink can also be made visible with a special pair of glasses. Many people wear these glasses to see the invisible ink marked cards. These glasses are often printed with UV invisible ink, and they are designed to look just like regular sunglasses. These glasses are able to read the invisible markings on the backside of the card.
These glasses with invisible ink are often sold as a package along with a series of marked cards. These glasses look like a pair of sunglasses and no one will be able to tell the difference. These invisible-ink glasses allow you to read the invisible markings that are on the back of marked cards in different environments. This includes day and night, black and white lights, indoors or outdoors.
Check out our selection if you are looking for a stylish set of invisible ink poker glasses to use during your next game. There are a number of different types available, so you can find the perfect pair to suit your needs.