http://www.newscientist.com/article.ns?id=mg18624975.800
David Hambling
"Should police officers be armed with a gun or simply a baton? What about something in between: a radio-frequency stun weapon? Or perhaps a semiconductor- or chemical-based laser? New Scientist has learned that the US justice department is funding research into all three devices. But, if they are safer, why is it almost impossible to find out how they work?"
