These pagers cost about $1,500 to $2,500 each and start vibrating when the wearer is getting doused with radiation. Wired News reports:
Since 9/11, they've become a routine piece of equipment for thousands of Customs and Border Protection officers, along with an unknown number of cops, firefighters and other "first responders," including police who patrolled at least one Super Bowl.After the Beep, Exit the Premises [Wired News, 6-May]
If they work properly, the radiation pagers may reveal the silent and invisible presence of a "dirty" bomb. "If you've got a lethal dose of gamma rays, it tells you to back the heck out,"