Earlier quoted context omitted.
1) It's always listening for a keyword, and then it starts recording. It's a voice interface for a computer. 2) Your phone is doing the same thing except for it follows you around everywhere you go and records your map location, what apps you use, who you are talking to and what your web searches are. Your phone isn't recording just what you say...its recording what you do and where you do it and when you do it. It's…
Point 1: Keyword triggers and is actually said are miles apart, as shown by the Alexa creepy laugh episode. There is no practical way of knowing when Alexa has heard a keyword and recorded content around it. Not to mention the Google play incident where a poor wiring job made the devices think the "enable assistant" button was constantly being pressed. Point 2: My phone, an iPhone, offers a way to turn off the keywor…
I know this isn't the kind of certainty you're looking for, but Google Home and Alexa both allow you to enable audio cues for when they start and stop recording. I find this helpful from an accessibility perspective, but the privacy-conscious may also appreciate the indicator.