| 摘要 |
Privacy of information is protected by a method of securing access to information associated with a value item, the method involving comparing a security signature and a stored profile, and permitting access to the information associated with the value item if the security signature matches the stored profile. An apparatus and method for detecting an item is provided in accordance with other aspects of the invention. The apparatus includes one or more sources operable to produce electromagnetic radiation in a range of wavelengths of the electromagnetic spectrum; and one or more imaging devices, such as cameras, operable to produce images of the item. Different images may be produced for different ranges of wavelengths being produced. A material profile may be made from digital representations of the images for subsequent authentication of the item and for detecting changes to the item.
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