An ultraviolet ray gun could inform detectives if a crime scene is tainted with traces of the drug methamphetamine, aka crystal meth. The Illicit Drug Detector gun, developed by CDEX of Rockville, Maryland, fires a UV beam at a surface, causing any meth molecules present to fluoresce at other UV wavelengths. This “signature” is compared with that stored in the gun’s on-board memory to identify the substance.
A smart room that can tell what you’re doing inside it has been developed in France. Researchers at the National Institute of Research in Computer Science and Control in Grenoble installed a fisheye…
