A pointing device generates pixel counts at a predetermined frame rate indicative of motion in predetermined axes of a user's digit across an imaging surface. A cursor motion controller receives the pixel counts and generates navigation output signals representing averages over predetermined time intervals selected to smooth the motion of a cursor on the display of an electronic apparatus. Optionally, the cursor motion controller can multiply a pixel count in each frame by a predetermined acceleration factor so that a cursor on the display of an electronic apparatus will move a greater distance based on an increased rate of motion of the user's digit across the imaging surface. Optionally, the cursor motion controller can interrupt the generation of navigation output signals for a predetermined interrupt period after completion of a cursor stroke. The averaging, acceleration and interruption features can be used independently or in various combinations.