Unfortunately, Amazon has never made opting-out of data collection on its devices particularly easy, and this new policy doesn’t buck that trend.
According to Bloomberg, users need to dig into their settings menu, then navigate to “Alexa Privacy,” and finally tap “Manage How Your Data Improves Alexa” to see the following text: “With this setting on, your voice recordings may be used to develop new features and manually reviewed to help improve our services. Only an extremely small fraction of voice recordings are manually reviewed.” more
