Technical

Johannes Ernst on December 18th, 2009

It was at the end of 2004 when I decided to start telling the world about this silly little idea I had had about a year before: give every person on the internet a URL that they could use to identify themselves to any website. Fully decentralized, no permission needed from anybody, under control of [...]

Continue reading about From 1 to a billion in 5 years. What a little URL can do.

Johannes Ernst on November 24th, 2009

Just finished watching Kim Cameron‘s talk at the recent Microsoft Professional Developers Conference. A bit of a surprise that talk of WS-* has largely disappeared in favor of much about REST. But the most interesting part, for me, was at the end, when Gert Drapers (Principal Architect, Identity and Access Platform), gave a demo on [...]

Continue reading about Microsoft turning the LDAP directory into a Graph Database?

Johannes Ernst on October 30th, 2006

What is wrong with this picture? % dig myspace.com … ;; QUESTION SECTION: ;myspace.com. IN A ;; ANSWER SECTION: myspace.com. 85833 IN A 216.178.32.50 myspace.com. 85833 IN A 216.178.32.51 myspace.com. 85833 IN A 127.0.0.1 myspace.com. 85833 IN A 216.178.32.48 myspace.com. 85833 IN A 216.178.32.49 I tried from a couple of points on the internet, and [...]

Continue reading about MySpace DNS poisened?

Johannes Ernst on June 15th, 2006

Digital identity only works if I can send some piece of data to you, such my home phone number, and you don’t think it is my car’s serial number or my dog’s birthday. So agreeing on a vocabulary between the parties in a distributed identity system is crucial, otherwise meaningful transactions are impossible. (If you [...]

Continue reading about Comparison of Identity Vocabularies

Johannes Ernst on June 7th, 2006

We have been working on a comparison of the ontologies of various identity systems at NetMesh in recent weeks. (Or schemas, or vocabularies, or models, or what-shall-we-call-them.) In other words, we’ve been comparing the quantity and quality of the meta-data that defines the meaning of the identity information that can be exchanged between parties according [...]

Continue reading about How do we deal with multiple ontologies for identity data?