The present disclosure relates to interactive projection systems. In one implementation, a system for projecting a user interface may include a film affixed to a surface; a first projector configured to project a user interface onto the film; a second projector configured to project a plurality of light beams such that the plurality of light beams form a plane above the film that does not intersect the film; and an image sensor configured to receive reflections caused by the projected plurality of light beams. The system may further include at least one processor configured to receive an indication of a reflection from the image sensor; determine a location associated with the reflection; in response to the received indication, determine a change for the user interface based on the determined location; and transmit a command to the first projector to modify the projected user interface according to the determined change.