| http://www.w3.org/ns/prov#value | - For example, the image data sources 200 and 700 may be scanners, or data carriers such as a magnetic storage disk, CD-ROM or the like, or host computers, that contain scanned image data. [0047] In general, the image data sources 200 and 700 can be any known or later developed source that is capable of providing image data to the document authentication device 100 and the document verification devi
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