In a nutshell, it’s all about privacy. But David Shayer’s TidBITS writeup does a nice job of explaining some of the details on how this is achieved.
Former Apple Engineer: Here’s why I trust Apple’s COVID-19 notification proposal
In a nutshell, it’s all about privacy. But David Shayer’s TidBITS writeup does a nice job of explaining some of the details on how this is achieved.