The basic idea is that sites with strong knowledge of “personhood” can issue anonymous tokens. A user’s browser can then present those tokens elsewhere as proof that a human is involved, or that an automated agent is acting on behalf of one, without revealing the person’s identity or browsing history.
These issuers will 100% sell these identifiers to be matched up with other databases.
These issuers will 100% sell these identifiers to be matched up with other databases.