nemozone

Block unwanted use of onboard microphone

Features a passive jammer technique that engages the microphone thereby blocking other apps from using it. But does NOT listen to or record any of the audio from the microphone. It uses 0% CPU and no noticeable battery use. However is not intended to be left on permanently due to the variety of triggers that can cause audiofocusstate changes (VOIP etc)…

https://f-droid.org/en/packages/cityfreqs.com.pilfershushjammer/