New apps from the likes of MIT, Google, and Apple rely on Bluetooth to automate the contact-tracing process, which health care professionals use to notify people who may have come into contact ...

Seven months into the Covid-19 pandemic, we still don’t know how effective contact tracing apps are. What we do know is Bluetooth can be wildly inaccurate ...

Looking for contact-tracing apps to help you figure out who near you may have coronavirus? MIT Technology Review has a list.