While it's possible to request from Amazon everything that they (claim to) have on their servers from our Alexa devices, it would be better if there was some way to explicitly deafen the devices. I had been using my Echo dot primary as an audio source to my living room speakers. But since it's not possible to know when the room audio is being piped back to Amazon I unplugged it. If there was a way to explicitly not wake to an audio prompt but only to a touch command I would consider plugging it back in... but I really don't trust it. So these days my living room speakers are fed by a very old iPod touch.