Could a mobile app control the COVID-19 pandemic and help reopen society?

Could a mobile app control the COVID-19 pandemic and help reopen society?



Right now, the SARS-CoV-2 coronavirus pandemic is out of control. In the U.S. we don't know who has it, hospitals are increasingly overwhelmed with patients, and the only method we currently have to control the spread is to keep everyone home as much as possible for an indefinite period of time. When society does reopen, how will we trace and isolate new cases so that we don't have to shut everything down again?