Method and device for identification and authentication of an object
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United States of America Patent
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N/A
Issued Date -
Sep 23, 2004
app pub date -
Mar 20, 2003
filing date -
Mar 20, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention refers to a method and device for identification and authentication of an object by means of coded information applied to the object. The function of said method and device is based on the principle of a laser scanner comprising two photoelectric detectors provided with decoding devices. In a first measuring channel and in classical manner an open coding in the form of a barcode is registered based on the different reflection/absorption of light at dark and light spots. In a second measuring channel the coded safety information applied on the same object is detected. By preference, the latter information is applied in form of luminescent safety pigments/coloring substances. By means of the source of light of the barcode scanner said safety pigments/coloring substances are excited at a defined optical wave length and show a specific luminescence in another wave length band. By preference, the detector device of the second measuring channel is provided with a wave length selecting element.
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