Experts question timing of MassNotify app launch

This week, Massachusetts officials are launching MassNotify, an app to track potential exposure to COVID-19. But with cases waning, some experts are questioning the timing of its launch. Massachusetts is the 29th state to launch a tracing app; Virginia was the first when it launched on in August 2020. “I think everybody is disappointed that it took so long,” said Ramesh Raskar, a professor at the Massachusetts Institute of Technology.