Chemical-selective device
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United States of America Patent
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Apr 22, 2014
Issued Date -
N/A
app pub date -
Nov 17, 2010
filing date -
Nov 17, 2009
priority date (Note) -
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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.
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