OpenIDs are universal login names that can be used across any OpenID-enabled website, resembling domain names like example.com/bill. Developed by Brad Fitzpatrick for blogging needs in 2004, OpenID launched a $50,000 bounty program in 2006 and now has over 160 million users and 10,000 supporting sites. OpenID allows for a single sign-on across multiple sites without ownership by any single entity and is supported by companies like AOL, Yahoo, and Google.

1. beTech 2/20/08

2. “OpenIDs are universal login names
which can be used at any OpenID-
enabled website. These usernames
resemble regular website domains or
addresses, such as example.com/bill
or steve.example.com”

3. History
• Developed by Brad Fitzpatrick of LiveJournal
• Driven by blogosphere needs
• Bounty program of $50,000 launched in 2006
• ~160 million OpenID’s and ~10 thousand
sites supporting it
“Nobody should own this. Nobody’s planning on making any money from
this. The goal is to release every part of this under the most liberal licenses
possible, so there’s no money or licensing or registering required to play. It
benefits the community as a whole if something like this exists, and we’re all
a part of the community.”

4. Hows it Work?
X
see: http://openid.net/developers/specs/

5. One Login, Many Sites
epugh.myopenid.com Over 10k places! Advanced Features
https://www.myopenid.com/ • multiple personas
directory • control what data sites request
http://openiddirectory.com/ (nickname, email)
• Pavatar, hCard, MicroID

6. Open Standard
No one owns it!
Shepherded by OpenID
Foundation
Supported by AOL, Yahoo,
Google! Dick Hardt of Sxip Identity, Josh Hoyt of JanRain,
and David Recordon of Six Apart
Wordpress, LiveJournal etc

7. You have to think about
your provider!
OpenID 1 vs 2
Reliance on another system
Still not widely used
Identity theft?

8. Use ful links?
• http://spreadopenid.org/
• http://www.37signals.com/openid/
• http://www.myopenid.com/
• http://openid.net/