Contact tracing with mobile applications is an attractive approach for many governments and industry initiatives to address the Covid-19 pandemic. However, many approaches today have severe privacy and security issues, and many of them also fail to offer a sustainable contact tracing infrastructure due to the demanding energy consumption. This work makes several contributions towards overcoming these limitations. First, we propose a privacy-preserving architecture for contact tracing that leverages a fixed infrastructure of BLE beacon transmitters. Second, we evaluate the feasibility of adopting batteryless or energy-harvesting BLE beacons to make this architecture more sustainable and green. Finally, we identify practical research challenges and opportunities for academia and industry to advance and realize the proposed privacy-preserving and sustainable contact tracing architecture.

翻译：与移动应用程序的接触追踪是许多政府和行业应对Covid-19大流行倡议的一个有吸引力的方法,然而,今天许多办法都存在严重的隐私和安全问题,其中许多办法也未能提供可持续的接触追踪基础设施,因为能源消耗要求很高。这项工作为克服这些限制作出了若干贡献。首先,我们提议建立一个利用BWLE信标发射机固定基础设施进行接触追踪的隐私保护架构。第二,我们评估采用无电池或无能源收集的BLB信标使这一架构更加可持续和绿色的可行性。最后,我们为学术界和工业界确定了切实可行的研究挑战和机遇,以推进和实现拟议的隐私保护和可持续联系追踪架构。