What personal information does an OpenID provider make available to the consumer?

Try reading this article about OpenID privacy.

If you want to drop open ID from GMail, you should look into setting up an openID delegate on your blog or some other HTML URL you control. Also, whenever I sign up for a new site using my OpenID, I get the -option- of transferring my stored fields (name, email, etc) into the site's registration page. I could just as well enter blanks or made up names when I sign up.

When you use your openID, you are essentially associating the openID with your user data for the page you sign up for. The only pieces of registration it replaces are Username, Password. If SO asks for an email when you register, you (should) have the same options as you do when you sign up using a temporary anonymous account.

If I registered a username maxwellbatgmaildotcom on a Web site, this is not obfuscating my email address too well, nor is using an OpenID which contains data that you don't want flying around. If you want to use an OpenID that doesn't reveal any of this information, get an OpenID or delegate one at a URI which doesn't translate easily into sensitive information.

There's a "learn more" link on the Google sign-in request page that answers some of these questions with regards to Google's current policies. That includes: What information does Google share with these websites? Google sends a random code to third-party sites to enable you to link|improve this answer answered Aug 12 '09 at 19:02keturn2,595616.

I believe the OpenID spec does not specify whether ANY personal information is shared. As such, this question will have different answers depending on which OpenID provider you choose to use. I would guess that most providers don't make anything exception your username available.

However, you would really want to read their individual statements on the issue.

I think if I have to study privacy statements before using their service I will just drop the OpenID idea and just register temporary anonymous accounts for each separate site I wish to use. – User Aug 3 '09 at 20:56 That's always the most secure option. – Chase Seibert Aug 3 '09 at 21:01.

With OpenID, you are delegating your authentication to your provider. Do they expose your email address to sites you use it to authenticate with? Do they reveal your information to anyone who asks?

Do they let anybody authenticate using your ID? Will they disappear tomorrow, leaving you unable to authenticate? It depends on the provider, and you have to trust them, or switch.It's incidental to your question, but this is why it is a good idea to use a simple public-facing web page which delegates your OpenID to a provider, which you can switch without changing identities.

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