Abstract: A method for optimizing touch controls on an interface of a touch-input computing device having a touch screen comprises the displaying of a zone on the touch screen and setting internal and external boundary sensing regions of the zone for the purpose of receiving and recognizing touch operations from a user. The touch-input computing device determines whether an initial contact point of the touch operation is located within the internal or external boundary sensing regions and if so deems such touch to be made on the boundary line, carrying out such resizing or other command accordingly.