whenever you hover over a formatting option with your mouse cursor, Office shows you what your document would look like if you chose to apply that formatting. For example, say that you drop down the font picker in Word. As you hover over each choice in the font picker, your document updates to show you what it would look like if you chose that font.
Why not apply the model to identity selection in Cardspace?
Hover over a card containing your shipping address and see a video of a package being delivered to your doorstep. Hover over another linked to an IDP with poor security policies and see an animation of a burglar climbing out your window carrying a TV.
Intriguing possibilities for the 'proof of age' card.