To combat COVID-19, at least 29 countries/regions have resorted to digital technology; some embedded it with strict containment measures and achieved great success. We need to improve cryptography and regulations that would enable contact-tracing systems without mass surveillance in order to attain the benefits of location-tracking while protecting individual privacy.

中文翻译：

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用人工智能和大数据与COVID-19作战。

为了对抗COVID-19，至少有29个国家/地区采用了数字技术。有些将其嵌入严格的控制措施中并取得了巨大的成功。我们需要改进密码和法规，以使联系人跟踪系统无需大规模监视，从而在保护个人隐私的同时获得位置跟踪的好处。