@Max - Are you familure with Acoustic Holography? One one pole it is what makes surrround sound in theater work. Another pole in liquids it can be used for non distructive testing. The microwave version was what I think was the core of the scanners TSA was wanting that can see through clothing. (or replace virtually one's clothing with a different outfit on the monitor device.)
Drones are, in essence, flying autonomous vehicles. Pros and cons surrounding drones today might well foreshadow the debate over the development of self-driving cars. In the context of a strongly regulated aviation industry, "self-flying" drones pose a fresh challenge. How safe is it to fly drones in different environments? Should drones be required for visual line of sight – as are piloted airplanes? Join EE Times' Junko Yoshida as she moderates a panel of drone experts.