1. A system comprising: a display; a sensor to detect an object and generate data related to the object; and a controller to determine a first pose of the object from the data and display a first representative image on the display and, in response to a pose change, to determine a second pose of the object and display a second representative image on the display, wherein the second representative image is associated with a displayed element when the controller determines coordinates of the displayed element correspond to coordinates of the second representative image, wherein the first representative image and the second representative image are radially symmetric images having different respective diameters; and wherein the first representative image has dimensions that are determined by the distance of the object from the display determined by the controller from the data.