Systems, methods, and other embodiments associated with controlling zooming and panning on a handheld computing device (e.g., personal digital assistant (PDA)) are described. A PDA may include a touch sensor that can generate both rotational and flick signals. A PDA may display images at different zoom levels. When “zoomed in”, less than an entire image may be displayed. Therefore a PDA may pan to different viewable image portions. An example system includes a receive logic to receive a rotational signal from the touch sensor. The rotational signal has a direction that indicates a desired zoom level change. The example system includes a control logic to change the zoom level in response to the rotational signal and to control the PDA to display the image in accordance with the updated zoom level.