There's also this architecture proposal by the maintainer of iPXE: <a href="https://github.com/ipxe/cx" rel="nofollow">https://github.com/ipxe/cx</a>
Here's a comparison of the Apple-Google solution vs. the PEPP-PT project using this DP-3T approach: <a href="https://medium.com/@legfranck/the-good-and-the-bad-of-apple-googles-privacy-preserving-contact-tracing-744806450be9" rel="nofollow">https://medium.com/@legfranck/the-good-and-the-bad-of-apple-...</a>
Where does this differ from the Apple/google approach? I was reading their doc and it felt like I was re-reading a simplified version of the Apple documentation, with the addition of a traceable-to-the-person healthcare provider authorization code.
a critical review of this approach: <a href="https://eprint.iacr.org/2020/399.pdf" rel="nofollow">https://eprint.iacr.org/2020/399.pdf</a>