https://techcrunch.com/2020/10/07/google-assistant-gets-an-incognito-like-guest-mode/

Google is launching a few new privacy features today that include a refreshed Safety Center that’s now live in the U.S. and coming soon globally, as well as more prominent alerts when the company expects that your account has been tampered with.

The most interesting new feature, however, is a new Guest mode for the Google Assistant on Google-branded devices. Not to be confused with giving guests access to your Google Chromecast, for example, this new Guest mode is more akin to the incognito mode in your browser. With Guest mode on, which you invoke by saying “Hey Google, turn on guest mode,” the Assistant won’t offer personalized responses and your interactions won’t be saved to your account. It’ll stay on until you turn it off.