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Infrared spy camera for infrared invisible ink marked cards

Infrared spy camera is conducive to see through the infrared invisible ink marked cards.

Infrared invisible ink is not like the ultraviolet invisible ink. The latter one can be seen through by ultraviolet contact lenses and sunglasses. The infrared invisible ink marked cards need to work with infrared spy camera. The infrared spy camera is fixed an infrared camera lens inside and set on the backstage. While you are playing with infrared invisible ink marked cards, your partner can see the infrared invisible ink on the back of marked cards through infrared spy camera. Then your partner will tell you the suits and numbers of marked cards via mini earpiece.
 

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