Yahoo! OpenIDs are the same for all RPs. I had assumed that Yahoo! would be using directed identity to provide a different OpenID for each user/site combination, to prevent correlation of accounts. I was incorrect; they’re just using it for easier sign-in, with the same auto-generated URL used for every site.
Recent articles
- The evolution of OpenAI's mission statement - 13th February 2026
- Introducing Showboat and Rodney, so agents can demo what they’ve built - 10th February 2026
- How StrongDM's AI team build serious software without even looking at the code - 7th February 2026