The user must
be aware of the
concept of identity
110 Hints Toward a Solution
university, and identities as just about any kind of digital persona
they expect to use in their activities. Information will naturally
fall into the right place. How much you paid for taxes last
year will be in the citizen identity and not in the alumni identity,
whereas for your grade point average it will be vice versa.
Once the information is packaged in explicit representations of
identities, it is ?¬?nally possible to reach a level of consistency in
all the transactions involving disclosure of identity data. Users
can choose which identities are most suitable in every given
context, while services can help users to understand the context
by explicitly limiting the set of identities they are willing to accept.
A service asking for our email and a service requiring
knowing our yearly net income can now do so using the same
user experience, relying on the new awareness that the user has
about his identities. The system must be secure, and the differences
between the two requests must be completely clear (see
the section ???User Control and Consent??? and discussion about
unambiguous operations in the section ???Human Integration???),
but the semantic of the two operations is the same.
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