The invisible ink mark poker card is made of a special invisible ink solution on the back of the card. Its appearance is the same as that of ordinary poker. The invisible ink is injected by a machine and cannot be recognized by the naked eye. However, after wearing contact lenses, you can see the invisible words painted on the back of the card (similar to the principle of a money detector)

1. Invisible ink mark playing cards are very practical among the props of magic cards, which can make you more smooth and accurate in performing magic;

2. If you don't wear contact lens, others can't see it at all, and the concealment is very high;

3. When playing with relatives and friends, it can bring you the most accurate and fast card recognition skills