The potential of digital contact tracing to slow the spread of a virus had been quietly explored for over a decade before the COVID-19 pandemic thrust the technology into the spotlight. But can it actually be effective in the hard-to-model complexity of real-world social networks?

中文翻译：

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数字联系人跟踪的过去，现在和未来

在COVID-19大流行使该技术成为人们关注的焦点之前，人们已经悄悄地探索了数字接触追踪来减缓病毒传播的潜力。但是，在现实世界中难以建模的复杂性上，它真的有效吗？