To facilitate to grasp an actual image of a commodity displayed on a screen as a result of commodity simulation, when performing the commodity simulation using a computer.

A tangible entity having an RF tag represents the aspect of an object, a source of a commodity simulation result, in the actual world. The system has a function of recognizing the object by reading an object data of the tangible entity representing the aspect in the real world, from the RF tag included in the tangible substance, storing the object data, a function of generating a finished commodity image based on the above object recognition function, and displaying the above image as commodity simulation result.