A user interface for a computing device, the interface comprising means for defining a coordinate system of a 3D frame (1), the 3D frame (1) being rotatable within a 3D environment of the user interface; and a plurality of 3D elements (2), each 3D element (2) being locatable at a position relative to the coordinate system for rotation with the 3D frame (1) and comprising a graphical indicator for identifying the 3D element (2).