It's interesting to see these tracing app discussions crop up all over the world at the moment. In Germany it quite literally took dozens of public interest groups, two weeks of media attention, EU guidance and an open letter by hundreds of scientists to make the government switch from central data collection to an acceptable decentralised approach. The amount of misinformation put out by lobby groups in the process…
Interesting. Do you have any pointer on the current German approach? I've been looking at the Robert protocol from Inria+Fraunhofer, and I'm not sure I like the central secret DB it requires.