Smart home voice commands leak private conversations to cloud but edge LLMs keep audio local

Every voice command to Alexa, Google Home, or Siri sends a raw audio recording to cloud servers for transcription and intent classification -- and these recordings include background conversations, arguments, medical discussions, and children's voices that the user never intended to share. Amazon confirmed in 2019 that human reviewers listened to Alexa recordings, and class-action lawsuits over unauthorized voice data collection have reached $30M+ in settlements. Users who want smart home voice control currently must accept that every sound in their home is transmitted to and stored on corporate servers, because the speech-to-intent pipeline runs entirely in the cloud. A Gemma E4B model running on a local smart home hub processes wake-word detection, speech-to-text, and intent classification entirely on-device -- the audio literally never leaves the living room, making privacy violations architecturally impossible rather than just policy-promised.