Yes, there are several, and the good one (linked below) lets you use the "humanness" token across different websites without them being able to use it as a trac

Yes, there are several, and the good one (linked below) lets you use the "humanness" token across different websites without them being able to use it as a tracking signal / supercookie. It's very clever. https://github.com/ietf-wg-privacypass/base-drafts https://github.com/ietf-wg-privacypass/base-drafts https://privacypass.github.io/ https://privacypass.github.io/