In a society where women are being prosecuted for medical procedures, menstrual data becomes very risky to have handed over.

From what I understand, they can get call records and subscription info w/ administrative subpoenas, but this is the first I've heard of them being able to get location data without a warrant.

Assuming you meant directly from the telcos and not from the data broker loopholes - in which case pretty much anyone should be able to do that. Emails and texts they still need a warrant for.

Great, so they can further extrapolate what exact locations you get nervous / are more relaxed / walk more quickly… the understated problem with PII isn’t about any single data point, it’s about combining data to make probable inferences.

The ring doesn't have gps but its app requires location permission so it gets it from your phone. It continually asks me to turn on background sync, which would presumably upload my location regularly as well. I decline and only allow location when the app is open to sync.