A user is able to informatively control how contact information is
provided to one or more applications through the use of a persona
interface object, corresponding personas and contact information, and an
information picker interface. The persona interface identifies available
personas, each persona having different contact information. The user can
select a persona to use in response to an applications request for
information. The personas can be modified and developed through the
information picker interface, which can also be used to inform the user
about what information is being requested and how it will be used.