| 摘要 |
The present invention in one aspect is directed to a method for labeling the durable surface of an object for its identification, which object has a durable surface or a durable surface tag affixed to the object. This method includes the use of "pit and fall" (i.e.., holes and bumps as are used to record compact discs, CD-ROMs) technology to encode durable surface objects with coded message. The coded message can be information on the owner, a history of the object, or any other information desired. The coded message would not be detectable to the human eye; however, by scanning the pits and falls with a laser, the coded message could be detected and displayed. Such coded message encoding could be used, for example, to label objects for thei r identification in case of theft, or in case of product counterfeiting or diversion.
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