Sorry for not giving you guys detailed informations. I'll just expose my idea. Of course someone could have invented this before but I thought of this idea on my own.
2 devices:
1. Vibrator - This goes in your pocket. The vibration is as quick as a snap of a finger.
2. Remote Control - This goes in your assistant's pocket. Only 1 button. When the button is pressed by your secret assistant, the vibrator device in your pocket will vibrate at the exact time.
Exact time of vibration is VERY ESSENTIAL. When your assistant pressed the remote control, it should immediately vibrate in your pocket and again the vibration should be quick as a snap of a finger. Of course if your assistant pressed the remote control 4 times, it will also vibrate 4 times.
Imagine the possibilities you can do with this. Let me give you JUST ONE of the many possibilities. You'll be able to perform a sure fire stigmata thought of number.
So I'll ask again, is there a product like this? Thanks a lot to all of you for helping always helping me.