This gives a
well-rounded view of a CardSpace interaction.
169
A good way to start
understanding
CardSpace is to see
it in action
170 Windows CardSpace
This sample walkthrough demonstrates a common CardSpace
scenario: logging in to a website. The site is able to request
different type of cards, which contain different information; in
this case, only an email address is requested.
From the User??™s Perspective
When users go to a site that uses CardSpace, they will see a
logon button that they can use to submit an Information Card.
Figure 3-1 shows a very simple example.
When the button is clicked, CardSpace opens and shows the
identity of the site that is requesting a card. This page, shown in
Figure 3-2, can help the user evaluate the site and make a decision
as to whether to use a card. This page appears only the ?¬?rst
time a card is used at a site and can be a cue to users to pay
special attention to the page they are visiting. If users think they
are returning to a site that they frequently visit, but this page
comes up, it could be a tip-off of an attempted phishing attack.
Users are then shown their cards so that they can pick which
one they would like to send (see Figure 3-3).
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