  We implemented a system able to locate people indoor, with the purpose of
providing assistive services. Such approach is particularly important for the
Art, for providing information on exhibitions, art galleries and museums, and
to allow the access to the cultural heritage patrimony to people with
disabilities. The system may provide also very important information and input
to elderly people, helping them to perceive more deeply the reality and the
beauty of art. The system is based on Beacons, very small and low power
consumption devices, and Human Body Communication protocols. The Beacons,
Bluetooth Low Energy devices, allow to obtain a position information related to
predetermined reference points, and through proximity algorithms, locate a
person or an object of interest. The position obtained has an error that
depends from the interferences present in the area. The union of Beacons with
Human Body Communication, a recent wireless technology that exploits the human
body as a transmission channel, makes it possible to increase the accuracy of
localization. The basic idea is to exploit the localization derived from
Beacons to start a search for an electrical signal transmitted by the human
body and to distinguish the position according to the information contained in
the signal. The signal is transmitted by capacitance to the human body and
revealed by a special resonant circuit (antenna) adapted to the microphone
input of the mobile device.
