Hi there,
I’m thinking of using Google Assistant/Alexa with my Sonos One speaker. Since I am concerned about privacy I would like to turn the microphone on and off triggered by automations (e.g. only on, when I’m in the kitchen). By doing so it is at least not always listening 
One solution would be to use a Wifi plug to turn the whole Sonos on and off, but it would be smarter and faster to do it e.g. via a switch provided by the Sonos integration. The Sonos one has a button to turn on/off the microphone, so I am wondering whether it is possible to implement this feature in the HA integration.
I am quite sure it has been designed to be switched only by the physical button press, to prevent a remote activation of the microphone. 
That might be true 
Did somebody already came to that point?
There’s no way I’ve found to control the mic from the network, but there is a way to report if it’s enabled or not. This could be added as a binary_sensor in the future. Not sure if that would help your plan.
What a pity 
That would be a way to at least warn myself, when the microphone is on for too long.
Has there been a change regarding remote microphone activation/deactivation in the last two years ?
Not possible by design unfortunately. Having it tied to a hardware button prevents the microphone being activated remotely by an external party in any scenario.
Thanks for your reply. I guess that makes sense for ‘privacy’ reasons.