Real ID information
The Department of Homeland Security (DHS) announced on December 20, 2013 a phased enforcement plan for the REAL ID Act (the Act), as passed by Congress, that will implement the Act in a measured, fair, and responsible way.
Drones use wi-fi for 3D mapping to 'see' through walls
The University of California is using wi-fi enabled drones to create a system of 3D imaging which could potentially allow them to "see" through walls.