  The efficiency and service quality in a medical environment can be improved
by using electronic documents (or e-docs) and digital signatures to speed up
both doctors' activity and to provide in the same time easy retrieval and use
of needed data without loosing convenience. Our proposed solution satisfies
these needs by making use of the AIDA system and many cutting-edge techniques
to build a digitalized management system. To be more specific, we present
firstly the AIDA document exchange framework for the management (creation,
search, storage) of e-docs expressed in XML format. The framework provides
security services, like privacy, authorization, authentication and
non-repudiation. We describe next the use of AIDA in a real world medical
service, namely the creation of electronic medical records (e- MRs). Doctors
can use mobile devices that embed a secure trustworthy environment defined also
in AIDA for digitally signing the e-MRs. Technically speaking a handheld PC
equipped with a smart-card reader and integrating What You See Is What You Sign
(WYSIWYS) features will be used for viewing and signing the e-MRs. Furthermore
the proposed system is easily integrated with the infrastructure (e.g.,
database system) already in use at hospital's administration site and allows
easy handling and updating of data processed on the mobile devices. The use of
web interface for the operations to be executed on the mobile device or for
those executed on the remote part of the system makes the whole application
homogeneous and easy to use.
