ETMIR01The emergence and convergence of Information and Communication Technologies (ICTs) are fundamentally transforming the use of technology, and in particular concerning the issues of mobility. The current debates on mobility, however, almost exclusively consist of functionalist analyses of how particular mobile technologies can alleviate geographical barriers for human activity. This paper reconsiders, from a theoretical perspective, the concept of mobility. We argue that mobility should not exclusively be linked to human corporeal travel. The concept also relates more broadly to the interaction people perform. In order to appreciate the relationship between mobility and human interaction, three interrelated dimensions are discussed - spatial, temporal, and contextual aspects of mobility. In order to characterize the social topology of ICT supported mobilized interaction, we suggest and discuss the adoption of a fluid metaphor. Based on these discussions, a case of a new mobile technology system introduced in a Japanese distribution service firm is discussed.