Vibrating pagers

Vibrating Pagers or message pagers are devices which can signal information to the receiver.

This scheme of using 4 vibrating message pagers (each corresponding to answers A, B, C or D) was originally going to be used to help Charles Ingram cheat his way to the million when he was in the hot seat before the cheats dropped the plan as they thought it would be 'too risky'.

The cheats eventually decided to use a system of coded coughing from the audience to help Charles get to the correct answers.