Most current mobile technologies require on-screen operations for interacting with devices’ visual contents. However, as a trade-off for mobility, screens usually provide limited space for interactions. To address this problem, I explore Body-Centric Interaction (BCI) – a design theme that extends a mobile device’s interaction space from screen space to body space. My research methodology follows several steps. First, I use a generative bottom-up method – sketches and proof of concept implementations – to frame the breadth of the design space. Second, I populate the space with related work, which also unifies what has been done. Third – which is work in progress – I explore the depth of promising BCI methods, with the goal of developing, refining and testing particular mobile interaction techniques. Author Keywords Body-centric interaction, mobile interaction, design space. ACM Classification Keywords H.5.2 [User Interfaces]: Input devices and strategies, Interaction sty...