1. A computing device, comprising: a display screen configured to display an image to a user; an intensity-sensitive touch-sensing input mechanism configured to acquire an array of touch intensity data and to detect one or more objects touching the display screen from the array of touch intensity data; and a controller comprising a processor and memory containing instructions executable by the processor to determine an orientation of a finger touching the display screen from a direction between a center a first region of touch data of a higher intensity and a center of a second region of touch data of a lower intensity, and to adjust an image on the display screen in response to a determined orientation of the finger touching the display screen.