Abstract: A keypad mouse computer peripheral device of the present disclosure includes a housing on top of which is located a keypad having a number keypad. The input device has at least one clicker button operable by a user's thumb while the user's hand rests on a provided palm rest or wrist rest. Force exerted by the base or palm portion of an operating hand moves the present input device which permits the index, middle and ring fingers to be located on the 4, 5, 6 key positions of the number keypad. This maintenance of the resting or home position even while the user is engaged in movement of the present keypad mouse permits easy and fast entry of numbers. A position sensor on the bottom surface of the housing of the disclosed keypad mouse detects relative location information for positional information input for a computer's graphical user interface.