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Vittorio Bertocci, Garrett Serack, Caleb Baker

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


Simpli?¬?ed signup
can lower drop-off
Choose:
Associate with an existing account
Create a new account
Choose a different card
Registration:
User name:
Email:
Password:
Confirm Password:
Sign Up for Your Membership to the Club.

Welcome back
to the website.

Optional
Validation Steps
The user is
signed in.
Implicit Sign Up Explicit Sign Up
Create User
Sign in with your
Information Card
Figure 5-10 Creating a new account
291
The modi?¬?ed user interface that supports both the existing formbased
signup andthe Information Card model would look
something like that shown in Figure 5-11.
The button is accompanied by a link that again helps users understand
what exactly they are seeing.
Recovering an Account
As mentioned earlier in this chapter, the account-recovery
process overlaps with the card-association process. At their
roots, they both accomplish the same thing: They enable users
to prove that they control an account and provide the capability
to associate a card with it. In practical terms, websites should
Putting CardSpace to Work
Figure 5-11 User experience for creating a new account
Users must be able
to recover their
accounts
292 Guidance for a Relying Party
provide pathways that work for both, in anticipation of user
needs.


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