You might find the FAQ here [1] helpful, but there is also more technical info linked from that page also. [1] https://www.apple.com/covid19/contacttracing htt

You might find the FAQ here [1] helpful, but there is also more technical info linked from that page also. [1] https://www.apple.com/covid19/contacttracing https://www.apple.com/covid19/contacttracing