Magic playing cards (zone)

Shake your smartphone to shuffle the deck, you can make 2 games:
1) the spectator chooses a card, you touch the screen to stop on the chosen card but nothing happens, you touch again but nothing happens, finally you ask the spectator to touch the screen and the chosen card appears.
2) STOP ACTIVATED BY SETTINGS: the spectator chooses a card, you touch the screen to stop on the chosen card but you are wrong! Now touch the screen to restart the cards and ask to the spectator to touch the screen, the chosen card appears!!