Various technologies described herein pertain to controlling functionality of a display based on visual focus of a user in a multiple display or multiple computational device environment. A particular display from a set of displays on which a user is visually focused is identified. The set of displays includes at least a first display and a second display. Moreover, a type of input receivable from the user via the first display and/or content rendered on the first display is controlled based on the visual focus of the user.