Contact tracing in the COVID-19 pandemic is key to prevent the further spread of COVID-19. Countries and regions around the world have developed and deployed or are considering adopting contact-tracing software or mobile apps. While contact tracing apps and software play an important role in the pandemic, red flags have been raised regarding the privacy risk associated with contact tracing. In this short paper, we provide an overview on the GPS and Bluetooth based contact-tracing apps in the framework of both centralized and decentralized models, examine the associated privacy risk and the effectiveness of the privacy-preserving measures adopted in different apps.

中文翻译：

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COVID-19 联系人跟踪应用程序的隐私风险和保护

COVID-19 大流行中的接触者追踪是防止 COVID-19 进一步传播的关键。世界各国和地区已经开发和部署或正在考虑采用接触者追踪软件或移动应用程序。虽然接触者追踪应用程序和软件在大流行中发挥着重要作用，但与接触者追踪相关的隐私风险已经引发了危险信号。在这篇简短的论文中，我们在集中式和分散式模型的框架中概述了基于 GPS 和蓝牙的联系人跟踪应用程序，检查了相关的隐私风险以及在不同应用程序中采用的隐私保护措施的有效性。