LAS VEGAS—During the Cold War, Soviet spies were able to monitor the US Embassy in Moscow by using a radioretroreflector bug—a device powered, like modern RFID tags, by a directed radio signal. But ...

Photo Credit: Virtek Vision International Inc. On June 1 Virtek Vision International Inc. (Waterloo, Ontario, Canada) announced the release of its Iris ActiveTrack laser positioning software that ...

Laser cutters are fantastic pieces of equipment, and thanks to open-source improvements in recent years, are getting even cheaper to make. It can be as simple as throwing a high-powered laser diode ...