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A comment on Malware can turn off webcam LED and record video, demonstrated on ThinkPad X230. Parent comment

Re:Malware can turn off webcam LED and record video, demonst... by fph on Wednesday November 27, 2024 @04:37PM (#42260032)
Going into full paranoid mode, I wonder if some other sensors / components can be used as a makeshift microphone. For instance, a sufficiently accurate accelerometer can pick up vibrations, right? Maybe even the laser in a CD drive? Anything else?
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Re:Malware can turn off webcam LED and record video, demonst... by meindnoch on Wednesday November 27, 2024 @04:50PM (#42260150)
Camera + bag of chips: https://people.csail.mit.edu/mrub/VisualMic/
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Re:Malware can turn off webcam LED and record video, demonst... by goodpoint on Thursday November 28, 2024 @04:20AM (#42263818)
Impossible with normal cameras.
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Re:Malware can turn off webcam LED and record video, demonst... by meindnoch on Thursday November 28, 2024 @01:26PM (#42267494)
"We also explore how to leverage the rolling shutter in regular consumer cameras to recover audio from standard frame-rate videos, and use the spatial resolution of our method to visualize how sound-related vibrations vary over an object’s surface, which we can use to recover the vibration modes of an object."
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Re:Malware can turn off webcam LED and record video, demonst... by bluGill on Wednesday November 27, 2024 @04:57PM (#42260217)
A condenser microphone is just a capacitor. Your computer is full of them.

They are very low level input and generally need a pre-amp just to get the signal outside the microphone. However conceptually at least they are there and so maybe someone can get it to work.

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