The professional privacy crowd is being intentionally obtuse about the possible uses of location data in epidemiological tracking, as demonstrated in this white paper. Thread:https://twitter.com/granick/status/1247983480572534790 …
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There are all sorts of privacy arguments you can make for why we shouldn't do this kind of contact tracing. I'll fight you, but they're strong arguments! The technical arguments, however, are weaksauce. Anything that helps prune a list of potential contacts is better than nothing
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A final point needs emphasis. The debate isn't how we use these technologies right now. There is no point to doing that until we've reached a state like Taiwan or South Korea, where it's back to tracking individual cases, and want to reopen the economy and resume normalish life
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The upshot is this: for the first time in human history, we have a working, automated real-time and retroactive location tracking tool for something like 80% of the US population. Do we make it part of our pandemic response, or strictly limit it to data brokers and advertisers?
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Or, second order, contact-trace airport employees at large hubs.
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China, SK, Taiwan, and Sgp all have variations on such a data stream. In China this is used to “code” one as green (free movement), yellow (limited movement / self-quarantine), or red (infected, no movement). Need to show code to enter shops, travel, etc.
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Data comes via cell phone location data, face recognition at security checkpoints, self-reporting (checking in daily to report temp etc), and physical checks.
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I suppose it may well depend on how much data ensues (if person 1 has 100 potential non-overlapping contacts in 1 day, each of whom... and so on) and the strike-rate.
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