Factbox: The race to deploy COVID-19 contact tracing apps
https://www.reuters.com/article/us-health-coronavirus-apps-factbox/factbox-the-race-to-deploy-covid-19-contact-tracing-apps-idUSKBN22Q2KU
Technologists and health officials around the world are racing to develop smartphone apps to trace who has been in contact with carriers of the novel coronavirus.