Most people don't realize how bad geolocated data is for a free society. I can buy data from a broker, geo-fence your house address, and then I'm able to see all the places where you went, who you associate with, and identify all you associate with by tracking them to addresses. All of this happens with anonymized device identifiers. It is the wet dream of a company such as Palantir and all governments who desire absolute control over their populations.