Invisible Card Punch by Dave Powell
FREE SHIPPING
With the Invisible Card Punch you will be able to achieve amazing card
effects by making a small bump on any card. You can now mark cards
before performing or secretly mark a card anytime you wish, right in
front of the spectator's nose. By placing a small amount on the reusable
adhesive Handitak also known as Funtak on the back of the gimmick, it
will stick to your thumb or index finger. Now you can have a spectator
freely pick a card and secretly mark the card with a bump by pressing on
the front or back of the card depending on which trick you wish to
perform. The spectator can shuffle the cards as much as they want and
you can always find their card immediately (This is great for ambitious
card routines.) I have included several routines but I'm sure you will
discover many more uses for the Invisible Card Punch.