MIT is working on a way to track COVID-19 while protecting privacy

Many countries and researchers are promoting the use of contact tracing apps to help limit the spread of COVID-19 and aid in the eventual recovery, but they may require slow manual tracing or a sacrifice in privacy (say, warning when a patient leaves home). MIT researchers think they have a solution with few compromises. They’re developing a system, PACT (Private Automatic Contact Tracing), that promises to automatically trace contacts while keeping identities secret.