very good thread that makes the Apple-Google contact tracing proposal understandable https://twitter.com/benadida/status/1249067484679794688
However, I’m skeptical of @benadida’s idea to have county health departments build the apps seeing as how it took them nearly a month to get dashboards of daily tests up and running (at least in CA)
fwiw, based on Ben’s description I’d download the app with no qualms