How Privacy-Friendly Contact Tracing Can Help Stop the Spread of Covid-19

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Nicky Case, working with security & privacy researcher Carmela Troncoso and epidemiologist Marcel Salathé, came up with this fantastic explanation of how we can use apps to automatically do contact tracing for Covid-19 infections while protecting people’s privacy. The second panel succinctly explains why contact tracing (in conjunction with quick, ubiquitous testing) can have such a huge benefit in a case like this:

A problem with COVID-19: You’re contagious ~2 days before you know you’re infected. But it takes ~3 days to become contagious, so if we quarantine folks exposed to you the day you know you were infected… We stop the spread, by staying one step ahead!

Contact Tracing Comic

It’s based on a proposal called Decentralized Privacy-Preserving Proximity Tracing developed by Troncoso, Salathé, and a host of others. Thanks to Case for putting this comic in the public domain so that anyone can publish it.

Tags: Carmela Troncoso   COVID-19   Marcel Salathe   medicine   Nicky Case   privacy   science

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