A mobile device (MD) comprising α visual input device (C) for capturing external visual information (image; B,L,F) comprising real visual background information ( L,F), α processing device (PD) for associating α selected application with the external visual information (image), and for executing of the selected application based on the external visual information (image) and on user-related input information , and for generating α visual output signal (P(n+1))related to at least one virtual visual object (WO(n+1)) in response to said application is characterized in that said processing device (PD) is further adapted to provide said visual output signal (P(n+1)) to α projector device (P) included within said mobile device (MD) such that said projector device (P) will be adapted to project said visual output signal (P(n+1)) related to said at least one virtual visual object (WO(n+1)) onto said visual background, thereby modifying said external visual information.