| Resumen |
With the proliferation of mobile devices they have become an integral part of people’s lifes, enabling new possibilities of communication. This kind of devices may include a plethora
of subsystems such as sensors and actuators which can be used
for diverse purposes, for example acquisition of data about the
environment for context-aware applications. In Practice these subsystems can be used to transmit data in a covert manner. On this paper we explore the possibility of using the built-in microphone and speakers to establish a sound based bidirectional communication channel on mobile devices capable of out-of-band transmission evading the traditional security controls |
