http://www.sciencemag.org/news/2020/03/cellphone-tracking-could-help-stem-spread-coronavirus-privacy-price > “IT IS POSSIBLE TO STOP THE EPIDEMIC.” That’s the message splashed atop a website built by a University of Oxford team this week to share new research on the spread of the novel coronavirus. Below that hopeful statement comes a big caveat: To stop the virus’ spread, health officials need to find and isolate the contacts of infected people—lots of them—and fast. Such contact tracing is a mainstay of infectious disease control. But the Oxford team is one of several now advocating for a new approach: tapping into cellphone location data to track the spread of infection and warn people who may have been exposed. > Several governments in Asia have tried that approach in ways that would run afoul of privacy laws in many other countries. China, for example, has reportedly relied on mass surveillance of phones to classify individuals by their health status and restrict their movements. Now, research teams in Europe and the United States are considering less invasive ways to collect and share data about infections, and some are already developing and testing coronavirus-specific phone apps. Governments, meanwhile, are scrambling to figure out how these potential pandemic-fighting tools could work within data privacy laws and without losing the support of an already wary public.