New app uses QR codes to trace coronavirus exposure

TrackCOVID could be instrumental in this effort. The project appears in a paper published recently in JMIR mHealth and uHealth. “Contact tracing is the process of tracking down and isolating people who may have been exposed to an infectious disease after someone has tested positive,” says lead author Tyler Yasaka, a software engineer and junior specialist in otolaryngology at the University of California, Irvine School of Medicine. … TrackCOVID works in a different way, he says, by creating an anonymous graph of interactions.