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Articles on contact tracing tech

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Exposure notification systems alert people when they’ve been exposed to the coronavirus but don’t record the information. AleksandarGeorgiev/E+ via Getty Images

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

Bluetooth wireless communication makes it possible to track when people have been exposed to people infected with the coronavirus. The right cryptography scheme keeps alerts about exposures private.
Accurate address data is vital for public services, including health monitoring. TippaPatt/Shutterstock

South Africa needs a national database of addresses: how it could be done

Address data are maintained in silos at different government entities. There is limited coordination and adherence to international standards; good practice is lacking around information management.

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