Explainer: How smartphone apps can help 'contact trace' the new coronavirus
https://www.reuters.com/article/us-health-coronavirus-tracing-explainer/explainer-how-smartphone-apps-can-help-contact-trace-the-new-coronavirus-idUSKCN21W2J6
A global race is on to develop smartphone apps and other types of mobile phone surveillance systems to track and contain the spread of the novel coronavirus.