NYPD testing terahertz wave-based remote gun detection system

Credit: projectrho.com

http://mobile.theverge.com/2012/1/19/2718236/nypd-terahertz-wave-remote-gun-detection-tests
/ stop-and-frisk stop and frisk NYPD New York Police Department controversial gun detection firearm New York Police Department testing remote gun detection system raise concerns privacy health risks system based terahertz waves microwaves infrared electromagnetic spectrum waves pass through non-conducting material clothing blocked objects like guns device NYPD testing capture terahertz waves emitted people objects suspicious concealed object blocked waves police identify firearm take appropriate action effective three five meters NYPD work distances up to 25 meters terahertz waves natural part environment aren't believed to be harmful radiation level is so low tools increase level of terahertz waves people exposed further testing ensure there aren't any ill effects privacy concerns technology New York Civil Liberties Union information accuracy accurate new technology public more information properly judge safety dangers concern citizens walk the streets virtual pat-down devices effective stop NYPD's stop-and-frisk campaign controversial random search New Yorkers privacy concerns lack of clarity deployed NYPD reasonably suspicious circumstances open to interpretation roll out testing clarification used /