The UK Government has suggested that a test, track, and trace strategy could be the answer to unlocking the lockdown in Britain and fighting the coronavirus outbreak. It would require an "army of volunteers" to aid contact tracing, where a person who is ill with coronavirus could log their condition on an NHS app - the tracing team would then use that person's data to work out who they may have come into contact with in recent days, and alert those users. Eivor Oborn is a professor of health technology at Warwick Business School - in this episode, she helps explain how contact tracing in the UK may work. How did we get here? Explaining the news is a podcast from 5 News. Join Andy Bell as he explains the world's biggest news stories through interviews with politicians, experts, and analysts.