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by fyp 2290 days ago
They do expose some limited interfaces that are pretty easy to browse. For example:

https://www.google.com/settings/ads

https://myactivity.google.com/myactivity

https://www.google.com/maps/timeline

https://www.facebook.com/off_facebook_activity/

1 comments

That last link doesn't contain anywhere near enough information. Look at it a few times over the course of a month, and watch how the data changes over time… often seemingly retroactively.