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1 The work described in this paper has been sponsored by Freeband Knowledge Impulse, a joint initiative of Dutch Government, knowledge institutes and industry. Abstract This paper describes a proposal for a privacy control architecture to be applied in the WASP project. The WASP project aims to develop a context-aware service platform on top of 3G networks, using web services technology. The proposed privacy control architecture is based on the P3P privacy policy description standard de-fined by W3C. The paper identifies extensions to P3P and its associated preference expression lan-guage APPEL that are needed to operate in a context-aware environment.