Public health experts have made it abundantly clear that to safely lift stay-at-home rules we must have four key things we don’t yet have. We need fast, accurate and widely available testing. We need a better plan for isolating and supporting people who have COVID-19. We need sufficient hospital capacity, including medical and protective equipment, to treat all patients safely. And we need more contact tracing. This blog explains U.S. PIRG's support for automated warning and contact tracing, subject to appropriate privacy and civil liberties protections, which can provide critical information quickly about who has potentially been exposed.