Google has said there are new tools coming to Google Maps, Google Assistant, and YouTube to help users control privacy.
These include: Google Maps incognito mode which won't save destinations and searches to a user account. YouTube gains a rolling auto-delete history. "Set the time period to keep your data — 3 months, 18 months, or until you delete it, just like Location History and Web & App Activity — and we’ll take care of the rest,"
Assistant history can now be deleted through voice control, although you can only do that for the past 7-days. Beyond that and you have to go into the Assistant menu.
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Whilst I welcome these additions, i'd like to see the ability to entirely stop the history and for the options to be opt-in only. ie, none of it is saved unless you choose to opt in.