In some embodiments, an input device for interfacing within an VR / AR environment can include a processor, one or more motion tracking sensors to track a motion of the input device in three-dimensional (3D) space, where a cursor in the VR / AR environment moves based on the tracked motion of the input device in 3D space and is limited to tracked motion having three degrees of freedom (DOF). The input device can further include a button that, when activated, selects an application window in the VR / AR environment when the cursor is placed over the application window, where the application window moves in the VR / AR environment based on the tracked motion of the input device in 3D space while the application window is selected. The input device can include a user interface that, when activated, accesses and controls content on the selected application window.