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As countries across the world grapple with the novel coronavirus, there has been a significant effort to integrate input from sources, from surveillance cameras to point-of-sale systems and connected health devices. The trend has highlighted the power of Internet of Things (IoT) deployments for public data collection as well as the technology’s privacy-eroding potential. South Korea, for instance, has aggregated data from IoT devices and smartphones to create detailed logs of its citizens’ behavior. The nation has documented where residents went, how long they stayed, who accompanied them and whether they were wearing a mask.

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