The approach to contact tracing taken by the Pan-European Privacy-Preserving Proximity Tracing project
As explained by the DP-3T project:
… the systems endorsed by PEPP-PT have technical differences that yield very different privacy properties, it is a mistake to use the term ‘PEPP-PT’ to describe a specific solution or to refer to PEPP-PT as if it embodies a single approach rather than several very different ones.
Please refer to the more specific choices within the PEPP-PT framework.
Given the press coverage below, it is not entirely clear that this project will continue to be developed.