> I'm not sure I can answer this, but it might help anyone who could if you know an example of an application that does the nature of tracking you are concerned

> I'm not sure I can answer this, but it might help anyone who could if you know an example of an application that does the nature of tracking you are concerned with? Using any map application (especially google maps) does not actually need to store my location for posterity to give me useful service, and I did not opt-in but android still does; Perhaps it's because I haven't been back inside Europe in the last month or so (and when I do, I'll get a "please opt in" prompt).