1. A touch sensitive apparatus for providing side touch panel as part of man-machine interface (MMI), comprising: a front panel disposed on a front surface for displaying information; a first sensor disposed on or under one of plurality of side surfaces for sensing a touch thereon; a first sensor controller coupling the first sensor for generating one or more signals in response to the touch on the first sensor; an application module providing a plurality of applications each comprising a plurality of function handlers; and a system framework providing registration information for each function handler associated with an action type on the first sensor, determining an action type in terms of the signal(s) from the first sensor controller, and driving one function handler to perform a specific function according to the determined action type and the registration information, wherein the first sensor is a resistive or capacitive type sensor.