With the miniaturization of projection technology the integration of tiny projection units, normally referred to as pico projectors, into mobile devices is not longer ﬁction. Integrated pico pro jectors in mobile devices could make mobile projection ubiquitous within the next few years. Mobile phones with integrated pico pro jectors soon will have the ability to project large-scale information onto any surfaces in the real world. By doing so the interaction space of the mobile device can be expanded to physical ob jects in the environment and this can support interaction concepts that are not even possible on modern desktop computers today. In this video, we explore the possibilities of camera projector phones with a mobile adaption of the Playstation 3
game LittleBigPlanet. The camera projector unit is used to augment the hand drawings of a user with an overlay displaying physical interaction of virtual ob jects with the real world. Players can sketch a 2D world on a sheet of paper or use an existing physical conﬁguration of ob jects and let the physics engine simulate physical procedures in this world to achieve game goals.