According to one embodiment, a touch sensor has a first edge and a second edge approximately perpendicular to the first edge. The touch sensor includes a first plurality of electrodes approximately parallel to the first edge, and a second plurality of electrodes. Each of the second plurality of electrodes has a spine that is approximately parallel to the second edge and a plurality of conductive elements that are approximately parallel to the first edge and in physical contact with the spine. At least one electrode of the second plurality of electrodes is adjacent to the second edge. The spine of the one electrode of the second plurality of electrodes that is adjacent to the second edge has a width that is greater than a width of the spine of at least one of the other electrodes of the second plurality of electrodes.