This should've happened a long time ago. I really think there should be more cooperation between governments and tech companies so they can come up with solutions like this much faster like they did in China
I hope.
Explicatory edit: The CCP, like every government in history, is motivated to conceal its human rights abuses. China also lacks a free press, an important window into its current events. Accordingly, there are obstacles in the way of justly assessing China’s response to this crisis.
New York Times science reporter Donald G. McNeil Jr. explains in this video, and in this article:
https://twitter.com/MikeIsaac/status/1238604080571772928
https://www.nytimes.com/2020/03/04/health/coronavirus-china-...
Cell phone location data helps to suggest if a person has travelled to certain location with their regular phone but that is about it.