Not only would this
reduce the number of duplicate accounts created for the
same user, it would also enable a signi?¬?cantly accelerated
login with the partners, without any aggravation to
the user. Taking it a step further, when signing in to a
partner site, the customer??™s meal choices, seating preferences,
and even whether he is eligible for a ?¬‚ight up-
CardSpace introduces
user-centric
federation
329
grade that day could be in the token. In this type of federation,
partners come together to build a formal set of
claim de?¬?nitions that they all support.
Making an ad hoc connection to services.
When visiting different sites and services on the Internet,
users are constantly bombarded with requests to authenticate
??”or create a new account if they don??™t already
have one. The majority of these websites are just looking
for the bare essentials, hoping to begin a relationship
with the user that encourages him to return time and
time again. Using CardSpace, these websites could certainly
use Personal Information Cards for sign in, but
given that there is no validation of the user information,
many sites insist upon at least con?¬?rming the user??™s
email address.
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