This was an interesting project from earlier this year: https://www.theverge.com/circuitbreaker/2019/1/15/18182214/amazon-echo-google-home-privacy-protection-p

This was an interesting project from earlier this year: https://www.theverge.com/circuitbreaker/2019/1/15/18182214/amazon-echo-google-home-privacy-protection-project-white-noise https://www.theverge.com/circuitbreaker/2019/1/15/18182214/a... "When the Alias hears its own wake word, it’ll stop broadcasting white noise and wake up Alexa or Google Assistant so you can use them as normal."