A method of performing a touch action in a touch sensitive device, the method comprising: sensing at least one touch input provided on a touch screen of the touch sensitive device; identifying a shape of a contact area associated with the at least one touch input provided on the touch screen based on one or more predefined parameters; determining a touch action corresponding to the identified shape; and performing the determined touch action, wherein the at least one touch input is sensed when a display panel of the touch sensitive device is in a screen-off state, and wherein the one or more predefined parameters comprise one or more of a right-left slant length of a region, a left-right slant length of a region, a number of touch points enclosed in a region, a hypotenuse of a region, a rectangularity of a region, and an elongatedness of a region, the method further comprising identifying an orientation of the shape of the contact area associated with the at least one touch input provided on the touch screen, wherein the orientation of the identified shape is determined according to an average angle method comprising: computing a set of a plurality of angles formed by lines joining boundary points to other boundary points where a distance between the joined boundary points is greater than or equal to a certain computed length; and determining an average of the computed set of the plurality of angles to determine the orientation of the identified shape. sensing at least one touch input provided on a touch screen of the touch sensitive device; identifying a shape of a contact area associated with the at least one touch input provided on the touch screen based on one or more predefined parameters; determining a touch action corresponding to the identified shape; and performing the determined touch action, wherein the at least one touch input is sensed when a display panel of the touch sensitive device is in a screen-off state, and wherein the one or more predefined parameters comprise one or more of a right-left slant length of a region, a left-right slant length of a region, a number of touch points enclosed in a region, a hypotenuse of a region, a rectangularity of a region, and an elongatedness of a region, the method further comprising identifying an orientation of the shape of the contact area associated with the at least one touch input provided on the touch screen, wherein the orientation of the identified shape is determined according to an average angle method comprising: computing a set of a plurality of angles formed by lines joining boundary points to other boundary points where a distance between the joined boundary points is greater than or equal to a certain computed length; and determining an average of the computed set of the plurality of angles to determine the orientation of the identified shape. computing a set of a plurality of angles formed by lines joining boundary points to other boundary points where a distance between the joined boundary points is greater than or equal to a certain computed length; and determining an average of the computed set of the plurality of angles to determine the orientation of the identified shape. <EOS>