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I'm not sure I understand what OpenID is ... but I see plenty of sites that ask you for it. What is it? and how do I create one?

closed as too broad by Rubén, ale, jonsca Aug 29 '18 at 1:23

Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • I'm voting to close this question as off-topic because OpenID is not a web application as defined on help center. – Rubén Aug 28 '18 at 17:57
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OpenID is a Single Sign On service for the web

You have one login/password which can be used across all sites which support it.

This includes all StackExchange sites.

From OpenID Explained:

An OpenID is a way of identifying yourself no matter which web site you visit. It's like a driver's license for the entire Internet. But, it's even more than that because you can (if you want) associate information with your OpenID like your name and your e-mail address, and then you choose how much websites get to see about you. This means that websites that take advantage of OpenID won't bother you for the same information over and over again.

How do I get an OpenID?

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    It would be more accurate to say that OpenID is a standard, than a service. – Scott Lawrence Jul 1 '10 at 15:24
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With the OpenID, you don't need to create a new username and password.

You just simply login to sites using your Google or Twitter or Facebook (or other OpenID providers) account. You can get an OpenID here

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Here's the Wikipedia definition. There are a number of OpenID providers listed there as well. If you have any of the most popular webmail accounts available (Google, Yahoo, Hotmail), you've already got an OpenID.

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The idea behind OpenID is that you only have one place where you need to log in. Other sites can redirect you, to your OpenID site and let you log in there, the OpenID site will then create a unique token, that lets the site know that you passed validation and optionally you can send some info along, like username, email etc.

There are several services where you can create an OpenID when you log in to this site the most popular are listed.

You could even create your own OpenID server if you wanted to. It's based on open standards and available for all to use.

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