Mobile terminal and controlling method thereof

A method of controlling a mobile terminal, the method comprising:

• receiving, via a touchscreen of the mobile terminal, an input of a first touch gesture and a second touch gesture;
• storing, via a memory of the mobile terminal, a discrimination value for determining if the first or second touch gesture is by a touch pen;
• comparing, via a controller of the mobile terminal, an attribute of the first touch gesture with the discrimination value;
• receiving, via the controller, the first touch gesture as being from the touch pen when the attribute of the first touch gesture is within a predetermined value or range of the discrimination value;
• and
• executing, via the controller, an operation corresponding to the touch pen based on the first touch gesture being received as the touch pen.