This paper proposes a new system to increase the safety and reliability of existing carpooling systems, in order to overcome the psychological barrier that slows down the use of many potential users of carpooling. In order to achieve this objective, the system includes, on the one hand, a strong social component that fosters trust among users, and, on the other hand, progressive access to user data based on the estimation of the confidence levels provided by the system. The design of the proposal has been tested for its implementation in a smartphone application that supports the Android platform, is shared as an Open Source Project, and has been published in the Google Play Store. This work is in progress, so there are still several open issues, such as the development of the application on other platforms, the creation of an API for use in third-party applications or the study of existing agent-based models to compare the performance of the proposed system with the implementation of such mechanisms.