Provided are an I/O device, an I/O program, and an I/O method that enable visual recognition with such a sense of distance as if a target object that is a real image were in contact with a stereoscopic image that is a virtual image. The I/O device according to the present invention includes: a display device that can generate a stereoscopic image; and a depth level sensor that measures a distance to a target object. A stereoscopic region of the stereoscopic image generated by the display device and a depth level detection region of the depth level sensor overlap with each other to thereby have a common region therebetween. As a result, the visual recognition with such a sense of distance as if the target object that is a real image were in contact with the stereoscopic image that is a virtual image is possible.