1. An electronic system comprising: a camera having a field of view of a first area; a display screen configured to display a graphical user interface, wherein the camera is positioned at a first side of the display screen, is angled with respect to the display screen, and the field of view of the camera is of the first area in front of the display screen; an illumination source that is angled with respect to the camera and that is configured to illuminate a second area, the second area intersecting the first area to define an intersection region within the field of view of the camera, wherein the illumination source is positioned at a second side of the display screen, is angled with respect to the display screen, and is configured to illuminate the second area in front of the display screen, the second area in front of the display screen intersecting the first area in front of the display screen to define the intersection region; and a processing unit configured to perform operations comprising: capturing an image from the camera; analyzing the image captured by the camera to detect an object within the intersection region; determining user input based on the object detected within the intersection region; and controlling an application based on the determined user input.