Technically, many microphone types (MEMS, and electret) are a sensing membrane which are always reacting to the air pressure changes ( and other energy transfer

Technically, many microphone types (MEMS, and electret) are a sensing membrane which are always reacting to the air pressure changes ( and other energy transfers - depending on microphone technology) regardless of being “on” or “off”. It’s technically always “hot” even when muted by software - which is why software mutes and software controlled LEDs can’t be trusted. The safest way to disable a microphone is to physically disconnect the microphone, which is offered on some modern devices (hardware kill switches) - but isn’t an option on any device I personally own or have ever owned. I know of patent pending ways I invented to disable the microphone - but it’s an extremely hard problem to solve. Attempting to isolate/insulate/block the microphone are futile or impractical due to the amount of sound reflecting/absorbing material you would have to attach to your Mic. Do you think a company could make money selling the intellectual property to externally “kill” a MIC without harming it in our current society? My company doesn’t seem to think so :(