https://www.siliconvalley.com/2020/04/10/coronavirus-apple-google-to-work-on-contact-tracing-tech/ > By Stephen Nellis and Paresh Dave | Reuters > Apple Inc and Alphabet Inc’s Google said on Friday that they will work together to create contact tracing technology that aims to slow the spread of the coronavirus by allowing users to opt into a system that catalogs other phones they have been near.