I. INTRODUCTION
In the last years the number of mobile phone are risen over
than five billion. This device are changed the life of the world.
Indeed, it not possible to consider a world without a mobile
phone. There are many people that can’t live without a mobile
phone, there are also some dependence from this devices. In
the last years the world of mobile phones are changing, in fact
there are many new mobile phone that make different things
and not only the possibility to have a call. Indeed, some new
phones called smartphones have many functionality. This paper
describe an application created for the new generation phone
(see figure 1). The smartphone is a single portable device in
which radiotelephone functionality, personal computer (PC) or
personal digital assistant (PDA) and some sensors are
integrated. The last smartphones have integrated the GPS
sensor, that gives the coordinates in the global position system.
Some examples of smartphone are the iPhone, Nexus One,
Nexus S and etc.... These smartphones are widely used by a
growing number of people, who could enjoy the sensors
application equipped on it. A smartphone could have more than
ten different sensors, which enable it to measure a plenty of
parameters: temperature, acceleration in three direction,
magnetic field in three direction, speech noise, luminosity and
so on. This property of the smartphone is very interesting for
many people. Before the smartphone only few people had the
possibility to manage data from sensor. Indeed, for measuring
some parameter a person must to have some familiarity and the
know how to manage a sensor and an acquisition system.