> Cryptographically signed to you.

That's a bit of an oversimplification that makes this sound more concerning than it is. Not that it's 100% un-concerning, but I suggest that anyone concerned about this read the linked docs. It really was designed to be quite privacy preserving, though it's obviously a difficult challenge in this context.

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hamhock666 5 hours ago | parent [-]

Isn’t this GPS data to see where Covid has spread? Even if your name is anonymous, a GPS point that every day goes to your work and then your home is surely you?

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wolletd 5 hours ago | parent [-]

Most probably, yes. But how would you know who I am and where I live? And if you do know both of those things, are there other ways of figuring out my routines? Yes, there are.

Keeping the name out of that data does a lot for privacy. With a name in there, you could use the data to find my name and figure out my address. Without the name in there, you don't know which point I even am without knowing some of my locations from another source.

	▲	shakna 4 hours ago \| parent [-]
		Correlating data with another source is half of what data brokers do, so I wouldn't really say that is any level of privacy protection.