Bicycle Paper Marked Cards For Invisible Ink Contact Lenses
It is paper cards-American bicycle paper Playing Cards. It can be made as a marked cards that can be seen by our special contact lenses.
A Function: There is a special infrared contact lenses can see which card it is ,even though the card is back to you.
B Size: As the normal plastic cards you can see in the market.
C Advantage:1. The marked letter is big enough to see
2. Can be use in any card game and nobody will feel any different
3. Only the user wear the special contact lenses, then can see not only the luminous marks on his cards, but other people cards which was marked.
But how to use?
It is very easy to use, the user just wear the special contact lenses , then put the cards where you want , the you can see and marked as you know.