A mobile terminal and a control method thereof are provided. The mobile terminal comprises a wireless communication unit, a display (151) configured to display an image, and a controller configured to display a first input area overlapping with at least part of the image in response to a first touch applied to the display (151) and to transmit data based on a touch trace corresponding to a second touch of a user, which is acquired through the displayed first input area, to a client terminal (200, 300) including one or more other terminals through the wireless communication unit in real time, the first input area having translucent property to allow the overlap image to be recognized. According to the present invention, data corresponding to a touch applied to an input area can be transmitted to a client terminal to achieve each data exchange.