Nano barcodes can trace bombs even after they've exploded

You may not pay much notice to product trackers like barcodes and RFID tags, but they're absolutely vital in some fields; they cut back on bootlegging and help police determine the origins of bombs. Worcester Polytechnic Institute may have just delivered a major breakthrough, then, by developing nanoparticle barcodes. The minuscule tracers identify an object by producing a unique thermal signature (those colored lines you see in the photo) when they reach their melting point.

via Tech News Headlines - Yahoo News http://ift.tt/1kZbD0R