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We've found that this decoupling (multi-party) approach is a good way to improve privacy in a bunch of networking contexts -- here's a paper we wrote a few years ago with colleagues at Fastly and Cloudflare on the topic:

https://conferences.sigcomm.org/hotnets/2022/papers/hotnets2...

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(Carl from Obscura here)

Oh very cool! I met Chris Wood at the IETF a while back, he's working on a bunch of cool things including Privacy Pass!

I never met Chris Wood before but I remember this name due to him being a co-author of the Private Access Token idea[0]. I haven't heard of Privacy Pass before but it sounds very similar to PAT.

My understanding is that both of these would be very helpful to a VPN (I'm using the word loosely) user. Do you know if the adoption of Privacy Pass/PAT has reduced or mitigated annoyances such as frequent CAPTCHA checks for Obscura users?

[0]: https://www.ietf.org/archive/id/draft-private-access-tokens-...

You're absolutely right, Privacy Pass would definitely be helpful to consumer VPN users! :-)

We haven't implemented Privacy Pass yet as it would require a browser extension, but it is one of the technologies we keep an eye on!

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