Apple and Google partner on Covid-19 contact tracing technology

Already under discussion here: https://news.ycombinator.com/item?id=22834959

Identical post on apple's website: https://www.apple.com/newsroom/2020/04/apple-and-google-part...

(Except that google links to an android api reference and apple links to an ios api reference; also google links to this slideshow https://blog.google/documents/57/Overview_of_COVID-19_Contac...)