| 摘要 |
A commercial product has a label to help detect counterfeit ones of the product. The product includes an item having commercial value and a label adhered to the item. The label includes a printable substrate having first and second sides, indicia on the first side that is visible with illumination by visible light and that is of a nature to inform customers or potential customers about the item. Adhesive on the second side causes the label to adhere to the item, and printing on the second side is visible only upon upon illumination by electromagnetic waves outside of the visible light spectrum and is of a nature to indicate genuineness of the label and thereby to indicate genuineness of the item. The genuineness of the item can be determined by removal of the label from the item, illumination of the second side with the electromagnetic waves outside of the visible light spectrum so that the printing on the second side is visible and recognition of the printing on the second side as an indicator of genuineness of the label and the item.
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