Snooping Through Walls with Microwaves 217
denis-The-menace writes "According to an article from newscientist, scientists have devised a system to use microwave energy for surveillance. If people are speaking inside the room, any flimsy surface, such as clothing, will be vibrating. This modulates the radio beam reflected from the surface. Although the radio reflection that passes back through the wall is extremely faint, the kind of electronic extraction and signal cleaning tricks used by NASA to decode signals in space can be used to extract speech. Although, I doubt it would work in this room"
It was news... 45 years ago. (Score:4, Insightful)
foil vibrates too (Score:2, Insightful)
Tinfoil hats (Score:3, Insightful)
*Sigh* what now?
J.
Re:Coral Cache sucks (Score:3, Insightful)
When that happens, NO ONE can get to the page, not just those with lame firewalls.
[ObNerd]
The needs of the many outweigh the needs of the few.
Re:Invest in AA (Score:2, Insightful)
Add to this
Re:Fluff piece (Score:5, Insightful)
Interference detectors, more commonly known as interferometers, can detect distances far below the wavelength used to make the measurements. For example, 800 nm infrared laser light can readily be used to resolve 5 nm differences (I've worked on the development of such a system). Further, the distances being considered for measuring the movement of things like clothing or the throat and chest of the speaker are far above one micron (0.001 mm): put your finger on your throat and speak; think that's one micron you're feeling?
Re:Makes little difference (Score:2, Insightful)