I just dug into the Apple/Google COVID-19 tracing system, and it’s a lot of good decisions. It provides anonymity, privacy, and protects against spoofing. Full report coming shortly at @TidBITS

Effectively, they figured out a way (that’s very similar to Apple’s Find My system) to provide anonymized and cryptographically protected information that can only be checked by individual devices and only with the release by one party of non-identifying crypto data.

https://tidbits.com/2020/04/10/apple-and-google-partner-for-privacy-preserving-covid-19-contact-tracing-and-notification/ and the URL for that story