Abstract: A user interface concept for wireless ad hoc content sharing between portable devices referred to as portable content containers (PCCs). A user-centered design approach is provided enabling users to share content such as music and photos. A variety of physical ways of establishing a secure connections between the PCC devices is provided. In addition, a clear view on the location of the content stored on the devices, and a drag & drop interface is provided. Use is made of separate spaces, each containing the corresponding content and includes a “shared” space such that all connected users may transfer content to and from to their own personal devices. The use of a drag & drop interface in combination with the subdivision of the screen into several spaces, provided the user with a clear view on the content location. The close proximity of users is assumed and enhances social interaction.