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Inventors: Bonneau WCJr, Macklin J
Patent Title: Chemical-selective device
Publication date: 2011
Publication number: US20110115464

Abstract: A smartcard or other media that detects the presence of chemical and/or biological compounds or other items of interest on individuals handling by using chemical-selective devices. These chemical-selective devices can include non-linear (e.g., diode and/or transistor) and/or time non-linear (e.g., controlled resistor) electrical components and can indicate exposure to an item of interest through a change in one or more electrical characteristics. The exposure of the chemical-selective devices to items of interest is stored such that, when the smartcard or other media is presented to a card reader, the detection data can be transmitted to the card reader for appropriate processing by the system.
URL: http://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20110519&DB=EPODOC&locale=en_gb&CC=US&NR=2011115464A1&KC=A1

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