Google wants to expand the way that it uses your data for advertising, but it's asking you for permission first.
Over the next few weeks, all Google users will see a notification popping up in their Gmail or Chrome (or as an app notification like on the right) asking if they want to opt into a new type of "ads personalization."
If you opt into the change, Google could start using information it has about you from its own services like Search, Chrome, and YouTube, to influence the ads that it's showing you across its more than 2 million partners sites and apps, on any smartphone or desktop computer that you're logged in on.
Previously, it has kept data like your search history or YouTube playlists separate from the personalization it provides when you're browsing websites and apps that use Google to serve ads.
If you do opt-in, Google says it will be able to show you ads that are more relevant to you and give you better controls.
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