traces collected from the mobile phones. Furthermore, it is
crucial to understand the implications of privacy, trust and
confidentiality of the personal data collected and exchanged
in the system. It is also important to understand the nature
of interactions of the human users and model their behavior
in order to translate their actions in terms of the livingcommercial
platform. We provide a short discussion on the
nature of such application in the form of an application
scenario (see Sec. III).