分散式隐私保护邻近跟踪（DP-3T）是使用蓝牙进行接触链跟踪以防止SARS-CoV-2冠状病毒传播的另一个蓝图。
该协议由国际科学界开发，并于4月初发布，比Apple＆Google协议早两周，但详细的规范和源代码才出现在最近。政府瑞士，奥地利和爱沙尼亚已经宣布，他们将使用DP-3T SDK，以跟踪他们的应用程序的联系人。
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