The project, the first phase of which went under the title "The Mobile Information Society", is coordinated by Kristóf Nyíri, Member of the Hungarian Academy of Sciences. The participants include communication theorists, philosophers, psychologists, sociologists, economists, linguists, political theorists, and historians of science. While in all areas of life we witness a radical increase in the presence of mobile communications, fundamental questions as regards further directions of development are at many points open, and need to be addressed by the social sciences. The mobile telephone is by now more than merely a device to transmit voice. It has become a multi-purpose data transmitter – a mobile companion.