They don’t use the analogy in the article but it turns out that wi-fi effectively works as radar. By analyzing wi-fi signals, researchers have been able to identify movement in the vicinity of wi-fi routers. They can identify people, whether they are moving, and even detect specific hand gestures down to deciphering what someone typed, or lip movements well enough to guess at what they said with about 90% accuracy. Radar and wi-fi send and receive electromagnetic waves. The specifics may be different, but the similarities may make it easier to understand what is possible. Enthusiasts emphasize the potential to track people who are at risk of falling. Privacy advocates, and the rest of us, are faced with an invasion of privacy that goes far beyond password hacks. If we’ve essentially installed radar stations in our homes, especially overlapping ones, have we opened our lives in ways never intended or desired?
(Click on the photo for the link.)