Contact tracing app tells Pennsylvanians if they’ve been exposed to coronavirus The Philadelphia InquirerState launches pilot COVID-19 notification app NJ Spotlight News'NHS COVID-19' Contact Tracing App With Exposure Notification API Launches in England and Wales MacRumorsCOVID Alert PA app is secure, state officials say FOX4350000 residents download Pennsylvania's covid app in 24 hours TribLIVEView Full Coverage on Google News