Patent ID: 8559669
Filing Date: 2013-10-15
Classification: G01N

Abstract:
1. A method of determining exposure of a media to an item of interest, the method comprising: providing the media at a first location, wherein the media has a unique identifier; determining the unique identifier of the media at a second location; creating, at the first location, a first image of the media; applying, to the media, detection material sensitive to the item of interest, wherein: the item of interest is one of a chemical, a biologic compound, or an explosive; and the applying occurs at the second location; creating, at the second location, a second image of the media; analyzing the first image and the second image to determine if the detection material has sensed the item of interest, wherein the analyzing includes determining an optical change between the first image and the second image; and indicating a result based, at least in part, on the analyzing.