Apple and Google partner on COVID-19 contact tracing technology - Apple

Apple and Google announce a joint effort to help governments and health agencies reduce the spread of the virus, with user privacy central to the design.

Digital contact tracing - Wikipedia

Key considerations for contact tracing applications, 2021-03-12

The Dark Side Of The Apple And Google Collaboration Against COVID-19

Apple and Google Partner to Fight Covid-19

UK ditches homegrown COVID-19 tracing app for Google-Apple model - Software - iTnews

02 The COVID-19 app: how big tech outwitted the UK government

First Look: Apple and Google's New COVID-19 Contact Tracing Tech

Apple and Google are launching a joint COVID-19 tracing tool for iOS and Android

Apple, Google ban use of location tracking in contact tracing apps