How can this be asserted in a transparent way? Are you aware of any of Google's internal practices and use of data that have been audited by an external entity and published for review?
How would you rate Google's use of Location History to tell advertisers when you visit their store in terms of "very good privacy controls"?
"The AP learned of the issue from K. Shankari, a graduate researcher at UC Berkeley who studies the commuting patterns of volunteers in order to help urban planners. She noticed that her Android phone prompted her to rate a shopping trip to Kohl’s, even though she had turned Location History off.
“So how did Google Maps know where I was?” she asked in a blog post ."
"At a Google Marketing Live summit in July, Google executives unveiled a new tool called “local campaigns” that dynamically uses ads to boost in-person store visits. It says it can measure how well a campaign drove foot traffic with data pulled from Google users’ location histories."
"Google also says location records stored in My Activity are used to target ads. Ad buyers can target ads to specific locations — say, a mile radius around a particular landmark — and typically have to pay more to reach this narrower audience." [1]
https://www.apnews.com/828aefab64d4411bac257a07c1af0ecb