Method and system for switching input mode

The invention provides method and system for switching an input mode. The method is applicable to an input device and comprises the steps of receiving a first input signal, wherein the first input signal is generated by the input device sensing the first touch; determining whether the first touch is generated by a first touch unit and a second touch unit according to the first input signal; if so, switching the input device to operate in a mirror mode; If not so, switching the input device into a general mode or a gesture mode.