Shin Lim, has a trick out called "The Switch". Here is a brief description from the horse's mouth:
And now the video:
From the creative mind of Shin Lim: THE SWITCH is the cleanest way to switch a folded card for a spectators signed card.
Imagine placing a Mystery card on a table, in someone's hand, in a clear box, well... anywhere. This is done in full view of the audience. You then have a another spectator select a random card and sign it. On your command you cause their sign car to vanish completely from the deck. The spectator is asked to open her hands, the mystery card that the spectators has been holding the entire time is opened. It is the signed selection!
THE SWITCH is the cleanest way to switch a card because there are no boxes, no envelopes, etc. Words cannot describe how clean the switch actually is.
I assume this gets deleted so here are the main bits: The folded mystery card is placed under a spectators hand and another spectator is handed the deck, so he can choose a card freely. That card is the Eight of Diamonds. Then the same spectator is given a pen to sign the card. Then a cut and we see the card being signed.... well not really, we see the pen moving, but not the actual signature. Only when the signature is finished the card is show bearing said signature. (this will become important) With no further cuts the card is placed in the pack in an outjogged position. What follows APPEARS to be the DB spread control, a bottom palm, a mercury fold, a palm and then the mystery card is unfolded to reveal to be the signed selection.
Appears is the word of choice here, as all these steps are faked. Let's compare the signed selection and the mystery card in the end:
They look very close to each other... Well just to make sure I put both images into Gimp and placed one image over the other, adjusted angle and size, then I changed the transparency of the top picture back and forth to compare the two cards.
Do you see that little bow? No, well here it is:
So if he uses a different card, that means the whole control, the palm and the fold are faked too. And that is hilarious. I took a look at the control in the video and there is no finger movement at all. And there should be some. Little, but some.
It also means the card was not signed in the shot. The signing was faked as well. Probably with a pen that doesn't write.
But here is the question: WHY? Seriously... Why. Only that the card on the table can be picked up more cleanly then it could be done in real life? Hardly, as the routine could be done for real and it wouldn't look much different.