Mobile terminal and method of controlling content thereof

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

• displaying content on a front display unit of the mobile terminal;
• sensing a touch gesture applied to a distance detecting sensor on a rear input unit of the mobile terminal, the distance detecting sensor being activated when the touch gesture is sensed;
• measuring, via a controller of the mobile terminal, a spaced distance of a finger, taken away from the distance detecting sensor after inputting the touch gesture;
• and
• controlling, via the controller, an operation of the content displayed on the front display unit based on a combination type of the sensed touch gesture and the measured spaced distance,
• wherein the controlling the operation of the content comprises:
• capturing the currently-displayed content and outputting the captured content when the combination type is a type in which the distance detecting sensor senses a Knockon & Touch down on the rear input unit;
• extending a capture area by scrolling a captured screen when the combination type is a type in which the finger is spaced from the distance detecting sensor and held;
• increasing a scroll speed according to a spaced distance when the combination type is a type in which the finger is farther spaced in the held state;
• and
• saving the captured screen when the combination type is a type in which the distance detecting sensor is retouched during scrolling the captured screen.