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What is OpenID?
According toOpenID.net:OpenID is a free and easy way to use a single digital identity across the Internet.
OpenID is a great idea.
One place to login!
OpenID also assists with transferring information like Name, Location, Profile Icons and so on to the site.
While some OpenID providers attempt to alleviate this (by usingimage verificationortwo-factor authentication), the majority do not.
A leader in the industry but also a small company.
Look for them to be acquired in the future.
Pros: A widely used provider.
Allows you to set up a customized OpenID URL, such as openid.yourdomain.com.
Major supporter of the OpenID Standard.
Cons: The company is not “big”, so they have an unproven track record.
Google Accounts
Think you don’t have an OpenID?
Google recently joined the multitude of OpenID providers out there by offering OpenIDs to all Google Accounts.
So, if you have a Gmail address, you already have an OpenID!
Visit their account page, sign in and get your OpenID URL for signing up with OpenID compatible sites.
Cons:Google knows all.
ClaimID
ClaimID is an OpenID provider which has more than just OpenID.
it’s possible for you to also import images from Flickr, links from Del.icio.us, and more.
Pros:One of the more consumer-friendly OpenID providers, a profile page is included.
Cons:The site seems to be still in the beta stages.
An unproven track record.
Verisign Labs PIP
Verisign Labs Personal Identity Provider is the OpenID service from the well-known security firm.
Their service is ‘plain’, which is a good thing in my opinion.
For more information on setting this up, seemy post on integrating two-factor authentication.
Pros:Only two-factor provider I found, well known security company.
Free OpenID Firefox addon.
Cons:OpenID URL is hard to remember.
Currently, the main drawback is that not many sites accept OpenID as a valid login.
Some major ones,Blogger,Wordpress, and more [see full list here] are coming online.
Look to see a slow adoption at first, then a ‘tipping’ point where many sites will follow.
