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• Paul Pham@cryptogothvia Funding the FutureThere's been some interest in social contact (not contract) tracing with apps & blockchains for COVID-19, to tell you if you're in the vicinity of affected people, or privately report yourself (or by your doctor). This might alleviate the need to shut down unaffected areas while protecting identities of people, but I'm concerned it will create more suspicion, and also require more audio/wifi surveillance of your phone. When you walk into a business or a person on the street and an aggregated count goes up or down, differential privacy breaks.