For the fourth year in succession, the iHCI conference is inviting papers on a wide range of topics, including submissions exploring, discussing or challenging the many boundaries within our community today: the traditional boundaries between academia and industry; the physical boundaries which influence our work; the boundaries between creativity and code; the boundaries between research and real-world use; and the boundaries between 'traditional' desktop systems and mobile, tangible, or ambient interaction; and pushing boundaries into novel or challenging spaces. The event takes place at Dublin City University on September 2-3 2010. Contributions are also welcome that include, but are not limited to, any of the following topics of interest: - Accessibility & Universal Access - Case studies - Collaboration, groupware and social networks - Context-aware systems - Ethnographical and field studies - Evaluation methods and frameworks - Group interaction, collaboration and soci...