[Openid-specs-ab] Messages - 3.1.2 additional display parameter options

George Fletcher gffletch at aol.com
Wed Oct 19 19:00:39 UTC 2011


Per my action item Monday from ... here is a possible write up for 
additional options for the display parameter. Currently OpenID Connect 
defines one value 'none' which means that the request MUST be handled 
without showing any UI to the user.  Facebook defines (page, iframe, 
popup, touch, wap) some of which are also in the OpenID UI Extension. 
I'm not sure we want to support iframe so I didn't include it in the 
list below.

    page
         The Authorization Server SHOULD display authentication and
    consent UI consistent with a full browser page view. If the display
    parameter is not specified this is the default display mode.

    popup
         The Authorization Server SHOULD display authentication and
    consent UI consistent with a popup browser window. The popup browser
    window SHOULD conform to N x N pixels.

    touch
         The Authorization Server SHOULD display authentication and
    consent UI consistent with a device that leverages a touch
    interface. The Authorization Server MAY attempt to detect the device
    touch and further customize the interface.

    wap
         The Authorization Server SHOULD display authentication and
    consent UI consistent with a "feature phone" type display.


Note that the semantics are slightly different as these values are more 
hints from the client where as 'none' is a "command". Would it make 
sense to move the 'none' feature of display to the 'prompt' parameter? 
It seems to me that the semantics fit better. The main point of 'none' 
is that we don't want to ask the user any questions. The fact that no UI 
is displayed is a side effect of not asking the user for any input.

Thanks,
George

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