I wonder if there would be any way to use some other component in a laptop as a microphone. Similar to the Funtenna stuff demoed by Ang Cui in several of his ta

I wonder if there would be any way to use some other component in a laptop as a microphone. Similar to the Funtenna stuff demoed by Ang Cui in several of his talks. https://www.blackhat.com/us-15/briefings.html#emanate-like-a-boss-generalized-covert-data-exfiltration-with-funtenna https://www.blackhat.com/us-15/briefings.html#emanate-like-a... I'm unsure on how that would perform practically with audible soundwaves or if any other research has been done in that area. It would however be hard to mitigate, if possible at all.