4 votes Contact tracing and privacy protection Posted May 14, 2020 by Eylrid Tags: contact tracing, privacy, coronaviruses.covid19, technology, videos, 3blue1brown https://www.youtube.com/watch?v=D__UaR5MQao Link information This data is scraped automatically and may be incorrect. Authors 3Blue1Brown Duration 7:19 Published May 14 2020