GoKawiilHow to control what Amazon Alexa devices record and store
Amazon Echo devices always listen for their wake word, but users can mute the microphone entirely using the mic-slash button on top of the device, which triggers a red light when active. Alternatively, users can adjust data retention settings in the Alexa app under Alexa Privacy to choose how long voice recordings and transcripts are kept, including options to delete them by voice command on supported devices.