Luminous ink Infrared and UV Readers are used to view luminous ink marks on back marked playing cards. Used to poker games or magic tricks.
From appearance, the luminous ink glasses just is a normal glasses and no one can find difference. However, it is high end ultra marked cards sunglasses with a built-in crafted filter in the lenses. The Infrared or UV filter is what enables the sunglasses to see the luminous ink markings while they are can not be read by people naked eyes.
This glasses that see invisible ink on the back marked deck cards is very secret and able to use in various poker games.