Phones with integrated pico projectors are starting to be marketed as devices for business presenta-tions and media viewing, and researchers are beginning to design projection-specific applications and interaction techniques to explore a broader array of possible uses. To begin to document how people use projector phones out-side the laboratory, we present the results of a 4-week exploratory field study of naturalistic use of commodity projector phones. In our analysis, we consider how context, such as group size, relationships, and locale, influences projector phone use. A key observation is that users can readily exploit the new facilities of these devices to author interesting effects by employing representational tech-niques such as superimposition, scaling, translation, and motion. Thus, even the ''basic'' projector phone platform affords novel interaction modalities. Finally, we discuss the social implications of projector phone use for privacy and control, extrapolating from our observations to envision a future in which these devices are ubiquitous. With ubiq-uity, projector phone use may become problematic in public settings, motivating new rules of etiquette and per-haps laws, yet it may also engender new forms of creative expression.