Assistant uses your queries and info from your linked devices and services, to understand and respond to you, including to personalize your experience. Examples of info from your linked devices and services include location, contacts, device names, tasks, events, alarms, installed apps, and playlists.
Your data is also used to develop and improve Google products and services and machine learning technologies, as explained in Google’s Privacy Policy. To help assess quality and improve Assistant, human reviewers read, annotate, and process the text of your Assistant queries and related info. We take steps to protect your privacy as part of this process. This includes disassociating your queries from your Google Account before reviewers see or annotate them.
Learn more about how Google Assistant works with your data. Visit Google’s Privacy Policy to learn more about how Google protects and uses your data.