You tell one person to think of a specific time which you wrote down on a peace of paper and to mentally send this time to the second person.
The second person is than instructed to set the timer of the stop watch on your phone to a random time. Its her completely free choice when she stops.
Yet the time the second person ends up with will be the time the other person was thinking of!
Very easy, almost no sleight of hand
No App, works with any timer
No stooge or instant stooging
Close-up or on stage
Make it look like a hypnosis effect
No angle sensitivity
Easy to carry, you only need a mobile phone and a prediction
You start and end clean, your time can be tryed by the spectator before and after the effect