So @Pinboard is probably right that large-scale contact tracing demands well-regulated access to mobile operators and advertising services data. But if we do go the forced-app route, how could it be minimally disclosing? I wrote up a cryptographic outline:https://gist.github.com/colmmacc/740e7db2d9c5836848c849c02f600ec9 …
How does this change if the *where* does turn out to be important? If epidemiologists are trying to identify hot spots and map them?
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Once a contact can be identified, I suspect a lot of people would then give up their location history to the epidemiologist. That's different than having a very convenient searchable trove. It does make it more work for them to identify hotspots though.
Thanks. Twitter will use this to make your timeline better. UndoUndo
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