A metal injection molding apparatus is provided with features which reduce the amount of metal which enters the drive mechanism of the apparatus. One method monitors a telephone call for a call screening request for commercial, residential, and other identifiers of incoming calls. Without the touch screen display surface visibly providing indicia that corresponds to a desired character, the user can still input the character through user contact with the touch screen display surface. Controls the efficiency of laser action by suppressing or preventing laser action in certain modes without losses, rather the modes are made forbidden.