The men who stare at bar-codes

Working out of a Reno, Nevada, software firm called eTreppid Technologies, Montgomery took in officials in the CIA's Directorate of Science and Technology and convinced them that technology he invented -- but could not explain -- was pulling terrorist-produced "bar codes" from Al Jazeera television broadcasts. Using his proprietary technology, those bar codes could be translated into longitudes and latitudes and flight numbers. Terrorist leaders were using that data to direct their compatriots about the next target...