NEW YORK (CBSNewYork) – The NYPD is stepping up their war against illegal guns, with a new tool that could detect weapons on someone as they walk down the street.

But is it violating your right to privacy?

Police, along with the U.S. Department of Defense, are researching new technology in a scanner placed on police vehicles that can detect concealed weapons.

“You could use it at a specific event. You could use it at a shooting-prone location,” NYPD Commissioner Ray Kelly told CBS 2′s Hazel Sanchez on Tuesday.