An electronic apparatus includes an input interface, a controller and a processor. The input interface includes a central touch sensing region and a peripheral touch sensing region. The central touch sensing region has a central touch pad disposed therein, and the peripheral sensing region surrounds the central touch sensing region and includes a plurality of peripheral touch pads disposed therein. The controller is configured for detecting a touch on the central touch pad and at least one of the peripheral touch pads and generating a central detecting signal and at least one peripheral detecting signal. The processor is electrically coupled to the controller. When receiving the central detecting signal and the at least one peripheral detecting signal, the processor performs a corresponding function according to the variation of signal strengths of the central detecting signal and the peripheral detecting signal.