It doesn’t matter if it’s a poker card marked to cheat or a invisible ink marked card that allows you to read the backs on playing cards. Seeing through cards is a magical existence that exists where there is deception and gambling. These cards are sold as sunglasses. This makes them convenient for gamblers to use and unnoticeable for others. These see-through cards can be used to play any kind of gambling game.
A generic method of optically reading cards can be based on using an infrared-sensitive camera to image the playing cards as they pass through a shuffler or shoe for card delivery. The cards can be at the extreme ends of the shoe or shuffler, but also in intermediate positions as well. The card images are captured by the cards and sent to a computer in order to identify the suit and ranking of each individual card.
A radiation cutoff-filter placed between a playing card and an infrared-sensitive camera is another generic method of reading cards. This filter allows the majority of radiation visible through a card to pass, while reducing the amount of radiation in the IR range that is passed to and by the card. The resulting reduced amount of IR radiation reaching the camera allows for more precise and sharper card image recognition.
The clear plastic can be printed with graphics and text that appear behind the front of the card from the front. This is an excellent way to make sure your business cards stand apart from the crowd. Remember that the text on the card’s back will need to be reversed so it can be read through the clear plastic.