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Period tracking app refuses to disclose data to American authorities
(www.newsweek.com)
This is a most excellent place for technology news and articles.
It doesn't, but with these apps, you can see what information they send back to their servers (if any). If there is no info getting sent back to any servers, then there's nothing a subpoena can do since there's no info to subpoena. You can't obtain info that just isn't there.
That makes sense. Thank you!