A computing system includes a capacitive touch-display including a plurality of touch-sensing pixels, a digitizer configured to generate one or more capacitive grid maps, and an operating system. Each capacitive grid map includes a capacitance value for each of the plurality of touch-sensing pixels. The controller may be configured to receive the one or more capacitive grid maps directly from the digitizer, identify one or more touch inputs based on the one or more capacitive grid maps, and determine a dominant hand of a user based on the one or more touch inputs.