Embodiments that relate to an input system for a wearable display device are disclosed. For example, in one disclosed embodiment the wearable display device comprises at least one temple arm extending from a display bridge of the device. A first touch-sensitive strip extends along a first axis on a top side of the arm. A second touch-sensitive strip extends parallel to the first touch-sensitive strip on a bottom side of the arm opposite to the top side. At least a portion of the first touch-sensitive strip and a portion of the second touch-sensitive strip overlap as viewed from a second axis. Both the first and second touch-sensitive strips are configured to generate linear contact input signals from one or more user digits sliding along the first axis, with the linear contact input signals provided to a user interface program.