| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for preventing forgery, which is simple, and has low repeatability, and shows very high effects of forgery prevention. <P>SOLUTION: The state of an object is authenticated, wherein the object has unexpected patterns, shapes, undulation, etc., formed under the accidental circumstances, where the object formed by combining materials having the same or different weight, shapes, colors, properties, etc., is dropped, raised, burst, under the natural and artificial circumstances in a room, etc. <P>COPYRIGHT: (C)2004,JPO</p> |
