A computing device includes a housing and a display assembly having a screen. The housing at least partially circumvents the screen so that the screen is viewable and a set of touch sensors are provided with the display assembly. A processor is provided within the housing to detect a gesture via the set of touch sensors, and to interpret the gesture as one of a plurality of user inputs. The processor further detects a presence of extraneous objects on a surface the screen of the display assembly, and adjusts one or more settings of the computing device in response to detecting the presence of extraneous objects. For example, the processor may adjust the one or more settings by reconfiguring a set of actions to be performed in response to the plurality of user inputs.