The Effect: The DVD/book of a spectator is taken and examined carefully.
It's shown to anyone, and the magician doesn't touch it anymore. A random card is selected by the spectator: Queen of heart. The magician grabs the DVD and brings all the attention on the barcode, more particulary on its number suite. Everybody can constat it's aleatory.
The magician shown his hand empty, and slowly moves it on the barcode:
Visually, the numbers rearranged themselves for the name of the spectator's card: Q of heart!
The DVD and the magician's hands can be acuminated immediately.
It's man incredible souvenir for the spectator!
Combination a gimmick and a demonic psychological subtleties!