God gun
n.β Β«Soldiers fire blanks, of course. Team members wear harnesses with sensors that register when theyβve been hit, a sort of heavy-duty version of laser tag. When an explosive device goes off, an impartial observer with a “God gun” eyeballs the radius of the explosion and zaps those impacted.Β» ββDead-On Competition” BusinessWeek Aug. 21, 2006. (source: Double-Tongued Dictionary)