This research activity is devoted to the study of techniques and tools able to control the usage of mobile devices. A particular attention is due to the usage by non-adult in order to avoid them to access to non appropriate content. The focus is on the control of the usage of the applications in mobile devices, the timing,  the content received sent through different means (including Bluetooth connection), as images and videos. The activity is an interdisciplinary one  including image recognition, classification and searching.