careful!! if you protest you can be tracked using your phone. we know because examined a huge "anonymous" dataset on smartphone movements and were able to follow protestors back to their homes
https://www.nytimes.com/interactive/2019/12/19/opinion/location-tracking-cell-phone.html
this white dot is one person we followed. it was a senior government official. we used housing records to identify them. we actually traced two phones here – this person and their spouse. we found both of their workplaces and saw everywhere else they went. https://www.nytimes.com/interactive/2019/12/19/opinion/location-tracking-cell-phone.html
the data is stored for all time. it's sold to parties who are never disclosed. you will never get the data back and never learn who has access to it. you will never get to "undo" the tracking.

so some laws need to change around all that, i think.

note: we've deleted the data
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