Ink-Jet (Online Instructions) by Jean-Pier Vallarino

A new method with an exceptional climax!

The name of the chosen card appears on the card case!

Effect: The magician writes a prediction on the card case. The spectator freely selects a card from the deck. The magician turns the case over, to find a mixed up set of letters. After a quick gesture, the letters form the name of the card! The cards are spread, and one card is face up - the spectator's card. And, its back is a different color from those of the rest of the cards!

The card case can even be examined afterwards. For those who know: YES the inscription is really ON the box and the card-case can be given to the spectator.
Online instructions