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Articles on Contact-tracing apps

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South Africa must redirect efforts to managing the high-risk social spaces such as public transport. Getty Images

South Africa can get COVID-19 under control if it blocks the routes that enable transmission

South Africa's testing and tracing has not been at a level needed to suppress the spread of COVID-19. It must now focus on containing opportunities for super-spreading and transmissions.
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70% of people surveyed said they’d download a coronavirus app. Only 44% did. Why the gap?

Only 51% of survey participants said they supported linking the number of COVIDSafe app downloads with an easing of lockdown restrictions.
Apps that warn about close contact with COVID-19 cases are key to relaxing social distancing rules. Walter Bibikow/Stone via Getty Images

How Apple and Google will let your phone warn you if you’ve been exposed to the coronavirus

Bluetooth wireless communication makes it possible for people to get alerts on their phones when they've been exposed to the coronavirus. Adding the right cryptography scheme keeps those alerts private.

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