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How Do I Prepare My Phone for a Protest?
(themarkup.org)
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Set your phone on top of a Roomba that has scheduled cleaning throughout the day.
Pointless, unless you leave the roomba running outdoors. Indoors you don't have GPS coverage, and your phone is logged onto the same cell tower anyway. Might just leave it stationary at home, same outcome.
You definitely can get GPS coverage inside. It's entirely building dependant but I'm inside right now and if I open GPS it'll just work.