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If anyone is exploiting my system, microphone would be my top priority. Getting image doesn't really tell as much as listening to what, how and when you talk.
by dataker 12y ago
If anyone is exploiting my system, microphone would be my top priority. Getting image doesn't really tell as much as listening to what, how and when you talk.
- godgod 12y agoI disagree. Id rather be deaf than blind. If you are in front of your laptop all by yourself...you generally are pretty quiet. If the NSA has your laptop camera...they could see your keyboard which means your password. I usually don't talk to myself when I'm at a computer.
- a3n 12y agoIt establishes that you were there at a particular time. A jury or secret tribunal would probably believe a picture that they can see for themselves easier than an expert's voice print testimony.
- s_q_b 12y agoYou can also extrapolate a fairly decent image from the microphone, sort of like a make-shift SONAR.
- usefulcat 12y agoFrom multiple microphones, perhaps, but from a single microphone? Seems unlikely.
- s_q_b 12y agoYou have an array of microphones in your phone alone, not to mention the speakers, which are just low-fi mics. But in any case, you can do it with one microphone. E.g. http://fab.cba.mit.edu/classes/862.13/students/brandon/index.html http://fab.cba.mit.edu/classes/862.13/students/brandon/index... http://www.extremetech.com/computing/128735-microsoft-creates-kinect-like-system-using-your-laptops-built-in-speaker-microphone http://www.extremetech.com/computing/128735-microsoft-create...
- fyrabanks 12y agoThat first technique A) is very audibly noticeable B) requires you to put the laptop on a chair and wheel it around the room to make up for the fact that you only have a single microphone. The second technique basically only understands gestures. I wouldn't be at all worried about this in the wild...
- s_q_b 12y agoSomeone actually did it to China's PLA Unit 61398 using a technique similar to this: http://www.gizmag.com/microphone-room-mapping-epfl/27985/ http://www.gizmag.com/microphone-room-mapping-epfl/27985/, so I'd say it's worth worrying about in the wild.
- dTal 12y agoIts unlikely the speakers can be used as microphones, as they will be wired up to D/A converters and not D/A converters.
- logfromblammo 12y agoYou can produce a depth map from a single lens camera by manipulating the flash across multiple captured images. Similar results could be achieved with a single microphone if the device also has speakers capable of producing sound at certain frequencies.
- uptown 12y agoWhere is the microphone on a MBP?
- seandougall 12y agoVaries from model to model, but on my 15" Retina MBP, it's tucked in under the left speaker grille, near the Tab key. Pull up some software that shows you a live mic level (e.g. System Preferences -> Sound -> Input tab), and rub your finger gently over the grille, and you can usually tell roughly where it is by the spike in input volume. If you're wondering about blocking it off, though, that's much harder than the camera. You'd basically have to open the laptop and unsolder the mic capsule -- or mount a little white noise generator right over the mic, but then you can't close your laptop. :-)
- canvia 12y agoThe mic would also record the sound of keystrokes.