Process for making image index and a system using the image index

The invention discloses a process for making image index and a system using the image index characterized by attaching an image index easy to be ignored by human eyes on the surface of a subject. Theimage index can coexist with the main information of the surface of a subject, such as patterns or characters, etc. The image index does not intervene the human eyes to receive these main information. The image index carries the further information apart from the main information on the surface of the subject. Besides obtaining main information directly by human eyes from the object, extra data can also be acquired through a electronic system or performing an interactive operation.