3 ms·
Depends on how sure you want to be that nobody is listening, it's not necessary for the yellow dot to be overridden, maybe the attacker is using the acceleromet
by vhcr 3y ago
Depends on how sure you want to be that nobody is listening, it's not necessary for the yellow dot to be overridden, maybe the attacker is using the accelerometer to act as an improvised microphone.
- callalex 3y agoDo you have an example of this working, even in a pure research setting?
- sulam 3y agoSorry, this is absolutely not a thing. You’d have something if you said that someone could use the speaker as a mic, although of course you can’t do that on a phone without taking it apart. But the accelerometer on a phone, while in the phone, cannot be used as a microphone. I’d be very very impressed if someone managed to get usable sound out of an accelerometer floating in free space even, although that’s mildly conceivable. And while I hate to appeal to authority, I worked at Fitbit for 7 years and was directly responsible for the algorithms team that built the step counting, activity recognition and other algorithms for a chunk of that time. I’m very familiar with what the data off an accelerometer looks like and what you can train a model to extract from it.