Media space research is accompanied by a long-standing debate on the value of awareness leading to casual interaction vs. its potential for intended or unintended privacy invasion. This is not just a matter of technology: the trade-off between the two depends very much on the social makeup of the people using the space, how cameras are actually situated, the kinds of activities that typically happen in the space, and so on. This chapter offers a framework-a descriptive theory-that defines how one can think of privacy while analyzing media spaces and their expected or actual use. The framework outlines existing perspectives on privacy and then decomposes privacy into three normative controls for regulating interpersonal boundaries in an embodied dialectic: solitude, confidentiality and autonomy. By considering the nuances of these controls, this theory yields a powerful vocabulary of terms that disambiguate the many interrelated and subtle meanings of "privacy."