World
The World Embraces Contact-Tracing Technology to Fight Covid-19
- From Utah to Iceland, developers and governments build apps
- Tech widely used in China. Elsewhere, adoption is a challenge
Photographer: Catherine Lai/AFP via Getty Images
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Covid-19 has killed more than 200,000 people and triggered a severe recession. Governments want to get people back to work, and a key part of this is contact-tracing technology that helps authorities track the virus and warn citizens who may be infected to stay home or get tested.