Phoenix Wright: Ace Attorney Easter Egg - Not finger prints, but other markings

After finishing the last case of the game, the credits are being shown in this manner:
First, there is a character from the game explaining what has happened to them since the game ended in the top screen.
Then, the powder for finding finger prints is spread and blown away at the bottom screen, revealing the many persons who created the game.
Then another character appears at the top screen, reveals his/her fate, more credits are shown, and so on.

1. Wait until one character is speaking.
2. Touch the touch screen (the lower screen). You should see the fingerprints powder being spread out.
3. Blow the powder away (with your mouth) to reveal artwork of the character currently speaking.