In limiting the rapid spread of highly infectious diseases like Covid-19 means to immediately identify individuals who had been in contact with a newly diagnosed infected person have proven to be important. Such potential victims can go into quarantine until tested thus constraining further spread. This note describes a concept of mobile device (e.g. Smart phones) based approach for tracking interpersonal contacts which might have led to infection and alerting the potential victims. The approach assures means for defense against malicious usage while assuring a high level of privacy for all people involved.

中文翻译：

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一种完全分布式、尊重隐私的方法，用于回溯潜在传染性接触者

在限制像 Covid-19 这样的高度传染性疾病的快速传播方面，立即识别与新诊断感染者接触过的人的手段已被证明是重要的。这些潜在的受害者可以在接受检测之前进行隔离，从而限制进一步的传播。本说明描述了一种基于移动设备（例如智能手机）的概念，用于跟踪可能导致感染的人际接触并提醒潜在受害者。该方法可确保防御恶意使用的手段，同时确保所有相关人员的高度隐私。