His special interests include open government, interoperability, emergency and disaster response management, and strategic choices in mobile technology diffusion in digital government. He is President of the Digital Government Society and also the vice chair of the IFIP TC 8.5 Working Group (Information Systems and Public Administration). In addition, he chairs the renowned Electronic Government Track at the Hawaii International Conference on System Sciences (HICSS) and co-organizes the premier European conference on e-Government (IFIP EGOV).