This reminds me of something I read a few years ago.
Here is a
Link.
This is a good one! That means put it in "Favorites".
Some quotes for those who don't like to read.
"Possible locations to use this technology range from large gathering place such as shopping malls, schools, meeting places, and airports to small
stores and banks."
"A passive approach under development by the Lockheed-Martin Corporation would use a millimeter wave (MMW) receiver and a long wave infrared
receiver, either individually or together, to measure the difference in temperature between a concealed weapon and an individual s body."
p.s.
Look for this thread in the Gov. Projects forum.
[Edited on 7-7-2003 by ADVISOR]