Authentication of printed documents
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Apr 14, 2020
Grant Date -
Oct 26, 2017
app pub date -
Sep 23, 2014
filing date -
Sep 23, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
In one example of the disclosure, it is determined, based upon a scan of an overt image included within a printed document, that the image includes a subset area with an expected marking agent response. It is determined, based upon the scan, that a feature of the subset area meets an expected quality threshold. It is determined that a data payload represented by features of the subset area matches expected data for the image. A first measurement of the subset area is made, and it is determined that the image was produced by a printing device based upon a comparison of the first measurement to a second measurement of a sample image printed by the device. Authenticity of the printed document is determined based upon the expected marking agent response, the expected quality threshold, the expected data, and the comparison of measurements.
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