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How Apple and Google let your phone warn you if you've been exposed to the coronavirus while protecting your privacy

  • Written by Johannes Becker, Doctoral student in Electrical & Computer Engineering, Boston University
How Apple and Google let your phone warn you if you've been exposed to the coronavirus while protecting your privacyExposure notification systems alert people when they've been exposed to the coronavirus but don't record the information.AleksandarGeorgiev/E+ via Getty Images

Virginia has enabled app-less COVID-19 exposure notification services for iPhone users, joining California, Colorado, Connecticut, Hawaii, Maryland, Minnesota, Nevada, Washington, Wisconsin...

Read more: How Apple and Google let your phone warn you if you've been exposed to the coronavirus while...

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