Digital Conviction is an amazing effect that can be performed anywhere and anytime with all borrowed objects. Everything is completely ungimmicked and examinable and the spectator keeps a souvenir that will surely make you unforgettable.
Here is what happens in the effect. You approach the spectator and remove a joker or any card out of the deck. "We will use this as the wild card but we'll get back to that in a moment. Please will you select any card?" The spectator has a free choice of any card, nothing is forced. The selected card then gets lost in the deck. "Let's get back to the Joker." You remove the joker and place their initials on the corner of the joker. "Remember the joker is the wild card. Let's make this moment more memorable and take a picture." You now borrow their camera phone and take a picture of the joker with their initials. The spectator confirms that the picture on the camera phone is the initialed joker. The phone is immediately handed to the spectator and placed face down in their hand. "If I take the joker that we just took a picture of and give it a shake you can see that it changes to your selected card". With a closer examination the spectator sees that her initials are now on the selected card. Now you go in for the kill. "If that card changed in my hand then the picture in your hand should have changed too…" BIG reaction as the spectator just realized that they saw you take a picture of a joker with THEIR initials on it and it changed to their selected card with their initials on it.
This effect is huge and it's a worker.
Here are a few important points to remember: