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In recent times, following the increasing affordability of large-scale display and multi-touch technologies, the market has seen the development and increasing deployment of multi-touch interactive walls. This new medium offers a unique mix of information density, direct interactivity, and collaboration support, and these new features have radical effects on the interaction design for the multi-touch wall device. Designers and developers of the interaction on these walls encounter several new conceptual, methodological, and technical challenges. In this paper, we examine and explore the research issues at three of these interaction design aspects namely multi-touch input, user interface and co-located collaboration. We use the real world scenario of IT management as a working domain to illustrate our proposed solutions and we propose some design suggestions based on our own approach to those issues.