1. A mobile device comprising: a visual input device configured to capture external visual information comprising information associated with a real visual background; and a processing device configured to, associate a selected application with the external visual information, execute the selected application based on the external visual information and on user-related input information, generate a visual output signal related to at least one virtual visual object in response to said application, provide said visual output signal to a projector device included within said mobile device such that said projector device is configured to project said visual output signal related to said at least one virtual visual object onto said real visual background, thereby modifying said external visual information, distinguish from said external visual information received from said visual input device, said information associated with said real visual background and at least one virtual visual object earlier projected onto said background, and generate a next visual output signal for the at least one virtual visual object based on the distinguished real visual background information and the at least one virtual visual object earlier projected onto said background.