[OpenID] An OpenID "mobile" Hint?

Thu Jun 5 11:07:11 UTC 2008

Per (1) - I would have thought an OP could use the browser variables to
determine the device type and silently direct to a mobile GUI - rather than
a separate id. I have a mobile interface a while back but when I went to v2
I dropped it. Wasn't too much effort.

Are there any good OpenID mobile interfaces around?

Steven
http://weblivz.openid.org

-----Original Message-----
From: general-bounces at openid.net [mailto:general-bounces at openid.net] On
Behalf Of Kick Willemse
Sent: 05 June 2008 11:50
To: 'david at sixapart.com'; openid-general List
Subject: Re: [OpenID] An OpenID "mobile" Hint?

Talking mobile and openid I have a need to make a distinction between the
different scenario's/ dimensions. I see the following:

1. I logon to a website using my Iphone and when I am redirected to the OP I
get a bad GUI experience.. I think OP's need to fix this. Maybe by providing
a separate "mobile" openid. In the end this will evolve.

Additionally there is the problem if the OP that provides stronger
mechanisms like YubiKey that can't connect to the Iphone..

2. If I browse online using the Iphone and don't have a "slot" for any
additional key wouldn't it be great to use the mobile device as an
additional authentication token.. You could argue about the security because
now the out of band factor is gone (Both browsing and authentication within
one device) Nevertheless there are several technology's around to provide
this, mobile otp, sim pki, device fingerprint..) In the end it could result
in storing your biometric credentials on the mobile device. (fingerprint or
voice...)

3. I logon to the RP with my laptop and have an out of band authentication
going to the OP using my Iphone..... We need to think how the RP "redirects"
from his site to the OP and the end user. Why not introducing a openid
server on my mobile device. In this way the RP can directly redirect to my
phone openid server.

The openid server/applet is available on my mobile phone sim/ flash card. So
every user "owns" it's "dummy proof" openid server. Manage its data
decentralized on his mobile device and no need for difficult installation's.

In an ideal world I would say:

I have my own portable openid server on my mobile. The RP just redirects to
my mobile device (No matter if it is on my laptop or direct on my iphone) I
can use it to authenticate and in the end I just include my biometric
credential introducing the three-factor authentication...

...mmm maybe I should have some patent on this, well I am an European and at
least it is public now. :-)

If you have it, tell me where to buy it...

Kick

----------------------------------------------------------------------------
---------
Kick Willemse
Product Manager
e-mail: k.willemse at diginotar.nl
weblog: http://www.papierloos.nl

DigiNotar B.V.
Vondellaan 8
1942LJ Beverwijk
telefoon: 0251-268888

-----Oorspronkelijk bericht-----
Van: general-bounces at openid.net [mailto:general-bounces at openid.net] Namens
David Recordon
Verzonden: donderdag 5 juni 2008 1:50
Aan: openid-general List
Onderwerp: Re: [OpenID] An OpenID "mobile" Hint?

I think authentication mechanism would actually be in the minority of
the decisions for this sort of flow, was using the YubiKey OpenID
Provider as a very clear example of what won't work on a mobile phone.

Today I'm more interested in how we can increase the number of OpenID
Providers that have good mobile experiences and am thinking that this
sort of extension may be a tactic in achieving that goal.  Even just
pitting two OpenID Providers which both use passwords against each
other with one having a mobile experience and the other not would be a
good thing in solving this problem.

--David

On Jun 4, 2008, at 2:34 PM, Hans Granqvist wrote:

> It makes sense (though the YubiKey is a mechanism, not a provider),
> but
> it's a bit dangerous since security decisions on the RP based on the
> User-Agent's self-issued origin/type are quite tricky.
>
> An attacker would pick the easiest mechanism if there is a choice,
> too.
>
> Regardless, the XRDS file could map accepted authentication
> mechanism(s) to each URL as a simple attribute.
>
> Hans
>
>
> On Wed, Jun 4, 2008 at 2:08 PM, David Recordon
> <drecordon at sixapart.com> wrote:
>> In developing a mobile application that uses OpenID for logins one of
>> the things I've become really cognizant of is how poor of the mobile
>> experience most Providers have when it comes to OpenID.  It obviously
>> doesn't take a lot to create a streamlined Provider flow for
>> authentication and the trust request, but so far it seems that no one
>> has really done that.  I was also thinking more about Providers such
>> as YubiKey where authenticating with a USB device (despite how
>> awesome
>> it is) won't work on my iPhone.
>>
>> I'm wondering if it would be useful to write a dead simple extension
>> to provide some hints around mobile support?  Allow a Provider to
>> advertise in an XRDS file that they support a mobile login flow so
>> that Relying Parties could discover that theoretically making it so
>> that I could use a Provider such as YubiKey on the desktop and then
>> MyOpenID on the phone.
>>
>> Am I barking up a useful tree?  If I spec'd this would any Providers
>> actually implement a mobile friendly flow?
>>
>> --David
>>
>> _______________________________________________
>> general mailing list
>> general at openid.net
>> http://openid.net/mailman/listinfo/general
>>

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