Comment by NTARelix

My android phone's apps must ask for permission to use some of this data (location, microphone, filesystem, etc.), and android provides the options "always", "only when using the app", "this time only", and "never"; which seems to help with this problem, though I'm sure it's nowhere near a silver bullet. When I leave my home I only feel (mostly) untracked if I do so without my phone and only buy things with cash, which is almost non-existent behavior for myself and the people I know.