Electric Gloves, March 2009.
Two people wear gloves connected by thin wires. A light-sensor on the inside pad of the index finger triggers a potential 450 volt electric shock given to the other person. Depending on how much the sensor is exposed to light, more or less voltage supplies the shock given. With the hand completely open 0 volts are sent, but when the hand is in a fist a painful (not deadly) stream of electricity is sent into the other person's wrist. Because two people are wearing the identically functioning gloves shocks can be traded and shared between the participants. Once the gloves are on it is near impossible to remove them without severely shocking the other person.