Re:Amazon Sends 1,700 Alexa Voice Recordings to a Random Person
by ben174 on Thursday December 20, 2018 @04:11PM
(#18729151)
They also have visual cues enabled by default. The light turns on when it is listening. You quickly get an idea of when it is recording and when it is not. And it rarely falsely triggers.
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.