Anything from a metallic Rubik’s cube to an aluminum trash can inside a room could give away your private conversations.
from your devices. Now one group of researchers offers a surprising addition to that list: Remove every lightweight, metallic object from the room that's visible from a window.
The researchers' trick takes advantage of the fact that sound waves from speech create changes in air pressure that can imperceptibly vibrate objects in a room. In their experimental setup, they attached a photodiode, a sensor that converts light into voltage, to a telescope; the longer-range its lenses and the more light they allow to hit the sensor, the better.
Nassi's team isn't the first to suggest that long-range, optical spying can pick up vocal conversations. In 2014, a team of MIT, Adobe, and Microsoft researchers created what they calledshowing it was possible to analyze a video of a houseplant's leaves or an empty potato chip bag inside a room to similarly detect vibrations and reconstruct sound.
South Africa Latest News, South Africa Headlines
Similar News:You can also read news stories similar to this one that we have collected from other news sources.
First week of Giants, A’s spring games called off as MLB lockout continuesMajor League Baseball on Friday canceled the first week of spring training games through March 4 in the first public acknowledgement of the disruption caused by the lockout.
Read more »
Scientists unveil one of the highest performing atomic clocks everUniversity of Wisconsin-Madison physicists have made one of the highest performance atomic clocks. Their instrument is an optical lattice atomic clock.
Read more »
Batman Has A Brilliant Secret To Overpower Green Lantern's RingBatman just revealed a new secret way to stop the Green Lantern, as the ring-wielding vampire attacks him in DC vs. Vampires 5. Bruce has always hated the Corps, so it's no surprise he has a weapon ready to overpower them.
Read more »
Surprising Side Effects of Not Eating Carbs, Says Science — Eat This Not ThatTurns out ditching carbs isn't always a good idea—we turned to the science to determine the surprising side effects of not eating carbs.
Read more »
Uh-Oh, I Think I Made My Boyfriend’s Biggest Turn-On Into a Turn-OffDear How to Do It: Is it possible he just stopped liking it, or did I just screw up our sex life?
Read more »