A friend furtively pressed something into my hand at the IBM Convention in San Diego, then he quickly disappeared into the non-existant crowd in the dealer room.
It's a sample of Masuda's new version of "WOW" with a red back that appears and vanishes inside the gimmick. It's great and will soon hit the market with a DVD of instructions.
A card is freely chosen from the face-down deck. The spectator remembers it (and can sign the face as well).
The WOW window is shown on both sides--you can see through it--and is placed on top of the deck.
The card is lost in the middle of the deck.
The chosen card visibly appears on top of the deck and can be seen to appear through the WOW window.