Super E-book library

Vittorio Bertocci, Garrett Serack, Caleb Baker

"Understanding Windows CardSpace: An Introduction to the Concepts and Challenges of Digital Identities"

Putting CardSpace to Work
282 Guidance for a Relying Party
The preceding code demonstrates how to easily use two CSS
classes (CardsSupported and CardsNotSupported) and the
JavaScript AreCardsSupported() function to dynamically
change the user interface the client renders, depending on
whether Information Card support is present. With such a technique,
a typical sign-in experience is transformed from the
???username and password??? style of authentication prompt into
one that supports Information Cards, as shown in Figure 5-4.
In the Information Card??“enabled user interface, the user is presented
with three important visual elements:
The web page can
change based on
capabilities
Figure 5-4 User experience in a site with support for Information
Cards
283

Sign In with Your Information Card button. Clicking the
button will cause the user??™s Identity Selector to appear
and allow the user to select a card. The button should
indicate whatthe user is doing with the card, if possible.
In this case, the user is being prompted to sign in.

Don??™t Have Your Card? link.


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