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Vendor exclusivity security feature for paper-based diagnostic solution

  • US 9,933,359 B2
  • Filed: 07/22/2015
  • Issued: 04/03/2018
  • Est. Priority Date: 06/23/2014
  • Status: Active Grant
First Claim
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1. A paper-based sensor method comprising:

  • providing a paper sensor device including a test zone with multiple assay regions, each assay has a different concentration of a same reagent to measure different levels of a single test sample, the paper sensor device further including a calibration color area including a reference color;

    after the single test sample has been applied to the paper-based sensor and reacted to the reagents, capturing an image of the paper-based sensor including one or more color indicators each associated with an assay region;

    using a computer, performing colorimetric image processing of the captured image of the paper-based sensor to determine a concentration of analyte contained in the single test sample, the processing including comparing a color change of the assay regions to the reference color to determine the concentration of at least one analyte contained in the single test sample;

    wherein the paper-based sensor includes one or more of tracking information, personal identification information, security information, color calibration information, and environmental indicators; and

    ,wherein said security information includes a key to decode at least one unique characteristic.

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