Troubled lightning-gun makers Ionatron may score high on Sharon Weinberger’s Stupid Weapons Index but they can at least show off one working device, a short-range version of their technology called the Portal Denial System.
According to a 2004 Press Release :
As the video shows, in operation it not only looks good (especially when they turn the lights off) it even sounds good. DANGER ROOM readers may judge for themselves how practical it is for stopping would-be intruders.
www.youtube.com/watch?v=