An I/O device, an I/O program, and an I/O method that can add a sense of distance from the position of visually recognizing eyes to a stereoscopic image that is a virtual image, through an object that is a real image and provide visual recognition as if the stereoscopic image were associated with the object are provided. An I/O device of the present invention includes a display device that can generate a stereoscopic image, a depth level sensor that measures a distance to an object, and an event generating unit that generates an event according to a mode of the object at least either in a stereoscopic region of the stereoscopic image generated by the display device or in a depth level detection region of the depth level sensor.