▲If it's sensitive enough to read a heart beat, then surely it can be used as a covert microphone?
reply▲gavinsyancey1 month ago
[-] The laptop also contains a normal microphone. You can't access this without root; if you have that you have permissions to access the real microphone.
reply▲I can access the IMU without root on my M4 mac running Sequoia
reply▲... but think how much "engagement" a "security expert" would get out of this!
reply▲From testing, it seems to require me to press my wrists quite hard against the macbook to get a somewhat accurate reading on the heartbeat. Non the less a cool project and I wasn't even aware my macbook has an accelerometer.
reply▲The sample rate is only ~800hz (probably very difficult/impossible to increase)
reply▲The fundamental frequencies of voice are below half that, I think that means you can use it to determine what is said writing it's sensitivity range.
reply▲Depends on the bandwidth.
reply▲depends on the bandwidth
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