Patent ID: 8329096

Claim:
A method for detecting presence of a thing, the thing treated with a descenter, the method comprising in an area in which a thing treated with a descenter is present, using a detector to detect a descenter level in the area, producing a detected descenter level, comparing the detected descenter level to an initial descenter level for the area, the initial descenter level determined without the thing in the area, and determining that the detected descenter level is above the initial descenter level, said determining indicating the presence of the thing treated with a descenter, the thing being one of persons, drugs, explosives, produce, animals, agricultural products, and biological materials including bacteria, molds, dander, protein, urine, plasma, sera, viral agents, viruses, yeast, air pollen, blood, spores, protozoa, allergens, semen, radioactive materials, soil, sludge water, ground water, VOCs, biological toxins, chemical toxins, cysts, and gaseous agents.