[OpenID] New OpenID provider - using inkblot passwords

Johannes Ernst jernst+openid.net at netmesh.us
Thu Nov 29 22:06:41 PST 2007

Now we know what billg meant in February when he said Microsoft will  
support OpenID! Inkblots ...

[Sorry, couldn't resist. It's great to see you guys innovate around  

On Nov 29, 2007, at 18:52, Jeremy Elson wrote:

> Greetings,
> I’m writing to let you know about our new, experimental OpenID  
> Provider at http://www.inkblotpassword.com.  Our implementation has  
> a twist: we show you a series of inkblot images (similar to a  
> Rorschach test) to help you create and, later, remember your password.
> I’m part of a small group at Microsoft Research that does work in  
> the security and distributed systems space.  A few years ago, one of  
> our interns (Adam Stubblefield, now at Johns Hopkins) developed the  
> idea of using inkblot images for password prompting.  He spent the  
> summer doing a user study that showed that inkblots made it much  
> easier for users to remember very strong passwords.  The goal is to  
> reduce the use of weak passwords.  You can read about the user study  
> atftp://ftp.research.microsoft.com/pub/tr/TR-2004-85.pdf.  (There’s  
> also a summary of the research at http://research.microsoft.com/displayArticle.aspx?id=417.)
> Last month, we decided to whip up an OpenID implementation of Adam’s  
> inkblot generator.  Right now it’s pretty bare-bones, but if people  
> find it useful, we’d be open to suggestions on what to improve.
> Enjoy!
> Cheers,
> Jeremy Elson
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