** Magic Trick - Mind Reading / Decision Influence **
Effect:
You give your spectator the choice of four options (four colours, four Aces or four landmarks). Before they make a choice, for example colours, you select one of the four colours and place the phone face down. The spectator then makes their selection (verbally or visually). When the phone is turned over, you have correctly predicted (or influenced) their decision.
Built-in method is undetectable by the spectator. Easy to learn, easy to perform.
App contains link to video with full method explanation.