Simon Willison’s Weblog

Yahoo! Releases OpenID Research. Extremely valuable research, conducted with a group of typical Yahoo! users. OpenIDs usability remains bad, and if we don’t get it right soon something centralised like Facebook Connect will take over and the Web will stop being open. # 14th October 2008, 4:59 pm

Interview: Simon Willison on OpenID. Christian Heilmann interviewed me for the YDN blog. # 3rd February 2008, 10:18 pm

Yahoo! OpenID Provider service now available as a public beta. This actually happened a few days ago, but I’ve been offline for the past week travelling to New Zealand and attending Kiwi Foo. # 3rd February 2008, 10:17 pm

Yahoo! supporting OpenID 2.0 but not 1.1. Yahoo!’s Allen Tom outlines the reasons Yahoo! are supporting OpenID 2.0 but not OpenID 1.1. # 19th January 2008, 9:10 am

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. # 19th January 2008, 9:05 am

openid.yahoo.com. Yahoo!’s human readable guide to OpenID, complete with tour. It looks like they’re relying on the “sign-in seal” to protect against phishing. # 17th January 2008, 2:35 pm

Yahoo! Announces Support for OpenID. Here’s the official press release: “Yahoo! Support Triples Number of OpenID Accounts to 368 million”. Directed identity gets a mention; it’s going to be enabled for www.yahoo.com and www.flickr.com. The public beta starts on January 30th. # 17th January 2008, 2:29 pm

Flickr to Authenticate OpenID. Flickr /photos/username/ pages are now (almost) OpenIDs—they point at a new Yahoo!-wide OpenID server, but it hasn’t been switched on yet. It’s OpenID 2 only, presumably so Yahoo! can protect their users’ privacy by using directed identity to hide individual screen names. # 7th January 2008, 10:48 pm