Inside the global efforts to build a privacy-conscious COVID-19 tracking app, with experts contributing from the US, UK, Australia, Switzerland, and elsewhere (NBC News)

NBC News:
Inside the global efforts to build a privacy-conscious COVID-19 tracking app, with experts contributing from the US, UK, Australia, Switzerland, and elsewhere  —  The hope is that smartphone tracking — combined with widespread testing — can help create a framework for cities to let people resume their lives.