Yesterday I was asked to allow the usage of location services for Google Maps seemingly out of nowhere. Of course I accepted. After all, I just wanted to check a route to a local business and I was in a hurry. Back home I opened Google Maps again, and noticed that maps.google.com now redirects to google.com/maps. This implies that the permissions I give to Google Maps now apply to all of Googles services hosted under this domain. So far I only identified Google Flights to have made the same switch (google.com/flights), though I’m sure they’re just beginning to transfer their services to the main google.com domain.
Congratulations, you now have permission to geo-track me across all of your services.
Google will try very hard to get your data.