mobile device owners around the world from 2011 to 2016 , broken down by number of devices owned. The statistics show that in 2011 only 8% of the total number of mobile owners around the world had more than one device, but this percentage is forecasted to grow exponentially in the near future. In particular, the source predicts that by 2016 , 25% of all mobile phone owners around the world will have more than one mobile device and about 9% will have three or more devices. A similar trend has been defined by Deloitte Technology for multi-tablet ownership [5]. As the number of people owning multiple smart devices (not only smartphones, tablets and laptops, but also internet-TVs and wearable devices) increases, the combination and use of several devices together have become more common. In such a scenario, many opportunities for novel media experiences and applications are foreseen. In particular, Mobile to Mobile (M2M) multimedia applications are needed for a fast and easy transmission and sharing among users of any information, be it related to both the private and public sphere of the user.