This is easy to do though the instructions make it sound way more complex. I think this could be routined better, but due to the subject it could be of some interest to modern audiences.
Comes with a full gimmicked deck
Effect: A card is selected while you patter about computer hackers. The cards are cut in half and placed face to face. A computer card is put on top of the deck. The cards are now spread to show they they are totally mixed.
The selection is now returned and the cards instantly right themselves except one card. This turns out to be the selection.
(Notice: Includes: Printed Instructions.)( Post Source: martinsmagic.com - click for details )