The information processing device includes: an operation detecting unit that determines that a first touch operation has been detected, calculates the length of a virtual line segment connecting the plurality of touched positions detected or the rotation angle with respect to a reference direction for the virtual line segment, and determines whether or not there has been a change in the length or rotation angle of a virtual line segment when coordinate information has been inputted, the touch panel displaying a second screen, and determines that a second touch operation has been detected when it has been determined that there has been a change in the length or rotation angle of the virtual line segment; and an execution instruction issuing unit that issues an instruction to execute the process associated with the change in the length of the virtual line segment or the rotation direction of the virtual line segment.