To provide an information processing device that controls output on the basis of information about object displacement that corresponds to the body motion of a user. The information processing deviceis provided with: a displacement information acquisition unit for acquiring displacement information that corresponds to a three-dimensional displacement that corresponds to the body motion of the user at a prescribed region of an object on which the user is, on the basis of position information pertaining to the prescribed region; and an output control unit for exercising control so that an output unit performs prescribed output on the basis of the acquired displacement information. The object allows a user to be seated and has a seatback, for example, the displacement information acquisitionunit acquiring a position change in at least one of the longitudinal direction, lateral direction, and vertical direction of the seatback.