IBM and Microsoft just published the specification “Application Note: Web Services Addressing Endpoint References and Identity” at http://schemas.xmlsoap.org/ws/2006/02/addressingidentity/. This specification is referenced by the Identity Selector Interoperability Profile (ISIP) and is covered by Microsoft’s Open Specification Promise (OSP). This completes the publication and licensing under the OSP of all specifications that Information Cards [...]

Relying Parties often identify subjects using the Private Personal Identifier (PPID) claim and Signing Key values sent by an Information Card. Thus, it is important that the PPID and Signing Key values produced by a card be stable and long-lived. Unfortunately, the PPIDs and Signing Keys generated by self-issued (a.k.a. personal) Information Cards using the [...]

I am pleased to announce the publication of the Identity Selector Interoperability Profile V1.5 and companion guides. The ISIP (as it’s come to be called) documents the protocols and data formats used by Windows CardSpace so as to enable others to build compatible Information Card software. Version 1.0 of these documents corresponded to the.NET Framework [...]

Microsoft recently created a Consumer Website for CardSpace to educate end-users about Windows CardSpace and Information Cards. This complements the developer-focused information at the MSDN CardSpace site and the CardSpace Community Site. No, it’s not the kind of content targeted at regular readers of this blog – especially the short video – but then, that’s [...]

Understanding Windows CardSpace: An Introduction to the Concepts and Challenges of Digital Identities by Vittorio Bertocci, Garrett Serack, and Caleb Baker, is now in print!. As I wrote for the “praise page” of the book: Chock full of useful, actionable information covering the “whys”, “whats”, and “hows” of employing safer, easier-to-use, privacy-preserving digital identities. [...]

I highly recommend the new book Understanding Windows CardSpace: An Introduction to the Concepts and Challenges of Digital Identities by Vittorio Bertocci, Garrett Serack, and Caleb Baker. As I wrote for the “praise page” on the back of the book after reading the current draft: Chock full of useful, actionable information covering the “whys”, “whats”, and “hows” of employing safer, easier-to-use, privacy-preserving digital identities. Insightful perspectives, on topics from cryptography and protocols

Last night OSIS and the Burton Group held the third in a series of user-centric identity Interop events where companies and projects building user-centric identity software components came together and tested the interoperation of their software together. Following on the Interops at IIW in May and Catalyst in June , the participants continued their joint work of ensuring that the identity software we’re all building works great together.

During Catalyst in San Francisco we announced the now-familiar Information Card icon and its accompanying usage guidelines. Since then we've received community feedback on clarifications we could make to the guidelines. In response, we’ve publish an updated version of the guidelines addressing that feedback and an accompanying updated complete icon zip file during Catalyst in Barcelona .

I’m pleased to announce two great developments. First, the CardSpace team just established a team blog. The blog will provide a direct voice for the team members to communicate about their work. Second, on the blog they’ve started a series of posts about new features to come in the .Net Framework 3.5, which will [...]