| 摘要 |
The present invention discloses a method for producing graphical indicators and interactive systems for utilizing the graphical indicators. On the surface of an object, visually negligible graphical indicators are provided 100. The graphical indicators do not interfere with the main information (text or pictures) when the perception of human eyes are concerned. In addition to the main information on the surface of object, one is able to obtain additional information through an auxiliary electronic device or trigger an interactive operation. The object is scanned and the graphical indicators are read and processed, with the additional information made available to the user. The graphical indicators can be printed using ultraviolet or infrared reactive ink, so it is invisible to the naked eye. |
