‘Contact Tracing’ Could Free America From Its Quarantine Nightmare

"Ramesh Raskar, a computer scientist at the MIT Media Lab, is working on an app that uses GPS to create maps showing the movements of people recently diagnosed with COVID-19. “In an early version, you might see a map with hot spots—2 p.m. at Starbucks, 3 p.m. at the library—that would tell you where people with the disease had recently been,” Raskar told me. “All the government has to do is demand that every test facility release the trails of infected people in an anonymous manner, so that healthy people know where to avoid.”

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