How much should Germany rely on contact tracing apps in the fight to contain COVID-19?
Developers worldwide are working on contact tracing apps that track the spread of the coronavirus through Bluetooth technology \u2013 that means, if you\u2019ve come into contact with someone who tests positive for COVID-19, you\u2019ll be notified. But how much do these apps actually help, and how much privacy do users have to give up? Host Sylvia Cunningham finds out more.