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In efforts to use information and communication technologies for the civil and political conduct of government, many countries have begun supporting e-government initiatives. The ultimate goal is to improve government-citizen interactions through an infrastructure built around the "life experience" of citizens. To facilitate the use of welfare applications and expeditiously satisfy citizens' needs, we wrapped these applications in modular Web services. Adopting Web services in e-government enables government agencies to provide value-added services by defining a new service that outsources from other e-government services; to uniformly handle privacy issues: and to standardize the description, discovery, and invocation of social programs. The core of our research is to develop techniques to efficiently access e-government services while preserving citizens' privacy. To that end we designed and implemented an infrastructure called Web Digital Government.