What makes this better then use assign every microphone to a individual.
Is it possible to be 4 individuals and 2 microphones? Then I would be impressed but if it have to be as many microphones as individuals then it just seems over engineered.
But when you give it access you can get data for a couple of weeks. So the m7 chip is keeping the data but you dont see it.
I also believe that it only stored on the phone and I think this is a setting to get people to use healtkit.