In this spirit, consider a commercial platform deployed,
e.g., in malls, which is based on electronic commerce,
customer relationship management, electronic promotion
and advertisement, that utilize presence detection primitives.
Such a system would utilize wireless communication technologies
like Bluetooth, WiFi, NFC, etc., in smartphones for
distributing content in order to engage consumers to interact
with stores and offers. The realization of such a system
requires the availability of specific technologies related to (i)
localization algorithms using wireless networks, (ii) software
implementation techniques for smartphones and embedded
systems as infrastructure, (iii) design rules for deploying
wireless infrastructures, (iv) algorithms for analysis of data