Using Wi-fi to "See" Through Walls
Posted on October 12, 2009 at 6:14 AM
This capability is out there on the military side already.
New Device Will Sense Through Concrete Walls (April 2006)
"Troops conducting urban operations soon may have a superman-like ability to “see” through concrete walls up to 12 inches thick to determine if someone is inside a building."
"According to Edward Baranoski, Defense Advanced Research Projects Agency's (DARPA's) Special Projects Office, the new radar scope will give warfighters searching a building the ability to tell within seconds if someone is in the next room. Users will be able to detect movements as slight as breathing by simply holding the portable handheld device up to a wall."
"One of the potential applications it lists is sensing if someone's still alive, in the case of a scene judged too hazardous for first responders to enter. It's something of a moot point"
1) Think triage on a building-by-building basis after a natural or man-made disaster. Instead of having to make an entry with a full team to determine if people are alive of dead, rescue efforts can be focused much more efficiently, Also, Google "tactical EMS" for another perspective.
2) While I understand this point of view and somewhat agree, I am increasingly disgusted by the "Safety first, victims last" attitude, especially when it is combined with closing the scene so that no help is coming, nor can victims self-rescue. Police in the town of Gretna firing on people trying to leave New Orleans after Hurricane Katrina is one extreme example.
I agree that there is no point to rescuers becoming hurt or killed. However, this is a reconnaissance tool and even if you have to walk away from trapped victims, you can report their existence so that appropriate resources can be (eventually?) dispatched.
Sidebar photo of Bruce Schneier by Joe MacInnis.