CA Notify, the Silicon Valley-originated exposure notification app, launched in December with all the trappings of success. An Oxford-backed study concluded that if just 15 percent of the state signed ...

Launched over a year ago as a high-tech answer to California’s contact tracing woes, most people who test positive for COVID-19 still are not using the “exposure notifications” smartphone app to warn ...

Late last year, California asked its residents to do a remarkably altruistic thing: Tell a state-sponsored cell phone app if they’d tested positive for COVID-19, as a public service to save lives. The ...

California will launch a COVID-19 exposure-notification system Thursday that uses smartphones to track interactions with infected people. The state “has partnered with Google and Apple to launch a ...

A version of this article first appeared on the website of the Public Interest Technology program at New America. During the COVID-19 pandemic, alongside social distancing and masks, governments and ...