What is IndieAuth?
IndieAuth is a way to use your own domain name to sign in to websites. It's like OpenID, but simpler!
Use IndieAuth for your OpenID
Using IndieAuth as an OpenID delegate allows you to sign in to any site that consumes OpenID using your IndieAuth setup.
To use indieauth.com as an OpenID delegate for the OpenID identifier of your site, add the following two link tags to the HTML (inside the
<link rel="openid.delegate" href="http://aaronparecki.com/" /> <link rel="openid.server" href="https://indieauth.com/openid" />
IndieAuth is part of the Indie Web movement to take back control of your online identity. Instead of logging in to websites as "you on Twitter" or "you on Facebook", you should be able to log in as just "you". We should not be relying on Twitter or Facebook to provide our authenticated identities, we should be able to use our own domain names to log in to sites everywhere.
IndieAuth was built to make it as easy as possible for users and for developers to start using this new way of signing in on the web, without the complexities of OpenID.
Is it good to delegate auth to 3rd parties
Is it good to delegate authentication to third parties like Facebook or Twitter for IndieAuth?
IndieAuth only relies on third parties for ephemeral authentication, once per IndieAuth login attempt. Because the reliance is only ephemeral/transactional, the delegation is ok. It's not great, but it's ok, and certainly better than directly using (Facebook Connect) or the equivalents for other silos.
IndieAuth also provides better UI flow and fallbacks than OpenID, while re-using the OAuth flow that users are familiar with from Twitter, Github etc., so it's an incremental improvement over other open identity solutions.
Why not OpenID Email etc
See: Why web sign-in.
Why not WebFinger
Why not add WebFinger support to IndieAuth?
"The problem is it's too easy to not own your email address (@gmail.com, etc) so it's not really an "indie" identifier. The point of IndieAuth is to encourage people to own their online identity."
See Frequently Asked Questions for more FAQs.
The IndieAuth API
The IndieAuth API lets you support RelMeAuth logins without writing all the OAuth code for each provider!
The IndieAuth source code is available on Github. Feel free to fork it and submit pull requests if you make any changes!
Please open specific bugs and action items on the IndieAuth Github project. This page is for collecting thoughts that may not yet be action items or for things that apply to the IndieAuth protocol in general rather than the indieauth.com implementation.
Contact page support
Some sites (which? list examples below) have a separate /about or /contact page where they list all their other profiles with rel-me links, and then link to that separate page from their home page with rel=me. This is a valid way to support web-sign-in per the relmeauth spec.
However, IndieAuth does not currently support following one-deep rel-me links on people's sites to look for auth providers.
Note: Crawling the second level of links will add significant time to the "scan" part of indieauth. One optimization is to only crawl a second level link if it's on the same domain as the authenticating domain. This means you wouldn't be able to have the chain example.com -> about.me/example -> github.com/example, you'd have to have something like example.com -> example.com/about -> github.com/example. Aaronparecki.com 09:08, 1 September 2013 (PDT)
Sites in the wild with a contact page separate to the homepage
Goal: IndieAuth should at least support consuming an OpenID provided by an indieweb server itself (i.e. perhaps ignore any OpenID delegation). Being a self-hosted OpenID provider enables the independent to completely avoid any silo dependency, even ephemeral, for authentication.
IndieAuth used to support consuming OpenID as well as web-sign-in.
There were strange problems with consuming OpenIDs from various OpenID providers
What were these specific issues? Let's document them here:
Github Issue: https://github.com/aaronpk/IndieAuth/issues/16
Need Simple Copy Paste How To
The explanation in http://waterpigs.co.uk/articles/indiewebcamp-signin-ux/ provides a list of three lengthy descriptions of what you need to setup IndieAuth, which was then subsequently criticized as "this is not a straightforward process" in the post: http://aralbalkan.com/notes/on-evolving-indieauth/
Thus we need a a simple copy paste how to that is not three lengthy descriptions.
Any explanation of how to use IndieAuth needs to start with a 1-2 sentence summary. No more.
Explanations for IndieAuth need to be at least as simple to understand as those for Twitter Sign-in and Facebook Connect.
Selectively Displaying rel-me Info
Selectively Displaying rel-me Info (e.g. hiding your phone number).
Tantek points out that he would like to be able to use SMS auth on IndieAuth, but doesn't want his cell phone number public on his site. 
Ideally your site would know that the request was coming from an (your?) IndieAuth server, and only render your phone number if so.
This would require either
Here is a potential example flow.
2 public key
Please document here if there is some other existing mechanism that can solve this!
A potential workaround is putting your phone number in a
Better Error Handling
My experience was that I had a slight URL mismatch when I first tried to set up IndieAuth, something like an http/https goof or having a trailing slash in one place and no trailing slash in the other. Whatever the problem, it prevented sign-in. I figured out that problem, but when I tried to sign back in, I got the error:
Parameter "profile" must be one of the rel=me links in the site specified in the "me" parameter
This didn’t make any sense to me, as a novice to IndieAuth. After several failed retries, I finally realized that IndieAuth.com had cached my old URL and needed me to rescan to pick up the corrected information. Once I did that, everything worked -- Eric Meyer
Two possible fixes here:
Want to help? See if you can contribute to one or more of the following: