I recently got my hands on an Echo Dot.
I'm hesitating to install it, since I'm concerned about my privacy. According to Amazon's privacy notice, they may use all data they capture.
I've noticed that the Amazon Echo comes with a mic mute button, which would be perfect for cutting down on voice data. But since Alexa is closed-source, I wouldn't be convinced that this button will keep my mic off under all circumstances.
Is the Echo mic mute button a software or hardware kill switch?
My searches didn't turn out much, mainly because the web is filled with low-quality news and non-technical articles.