Readers to analyze security features on objects
First Claim
1. A reader to analyze a physical object comprising:
- an input to receive data corresponding to optical scan data, the optical scan data corresponding to at least a portion of a physical document, the physical document including,first indicia provided on a surface of the object with a first ink or dye, the first ink or dye having a first emission decay rate;
second indicia provided on the surface of the object with a second ink or dye, the second ink or dye including a second emission decay rate, wherein the first emission decay rate is relatively shorter than the second emission decay rate,the first indicia and second indicia are arranged on the surface of the object so as to collectively convey a first machine readable code when the first ink or dye and the second ink or dye are excited by non-visible light; and
electronic processing circuitry to read a second machine-readable code that is carried by the second indicia, the second machine-readable code becomes readable as emissions from the first ink or dye decrease to at least a first predetermined level, but before the emissions from the second ink or dye decrease to a second predetermined level.
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Abstract
The present invention provides readers to analyze emerging security or authentication feature for physical objects (e.g., identification documents, product packaging, banknotes, etc.). One claim recites a reader including: an excitation source to excite an object with first non-visible light, the object comprising first indicia provided with a first ink or dye and second indicia provided with a second ink or dye, the second ink or dye comprising an emission decay time that is relatively longer than an emission decay time of the first ink or dye, the first indicia and the second indicia collectively conveying a first machine readable feature when illuminated with the first non-visible light, with the second indicia individually conveying a second machine readable feature after emissions attributable to the first indicia fall to a first level; and a code reader to read at least the second machine readable feature after emissions attributable to the first ink or dye fall to the first level and before emissions attributable to the second ink or dye fall to a second level. Other claims and combinations are provided as well.
276 Citations
25 Claims
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1. A reader to analyze a physical object comprising:
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an input to receive data corresponding to optical scan data, the optical scan data corresponding to at least a portion of a physical document, the physical document including, first indicia provided on a surface of the object with a first ink or dye, the first ink or dye having a first emission decay rate; second indicia provided on the surface of the object with a second ink or dye, the second ink or dye including a second emission decay rate, wherein the first emission decay rate is relatively shorter than the second emission decay rate, the first indicia and second indicia are arranged on the surface of the object so as to collectively convey a first machine readable code when the first ink or dye and the second ink or dye are excited by non-visible light; and electronic processing circuitry to read a second machine-readable code that is carried by the second indicia, the second machine-readable code becomes readable as emissions from the first ink or dye decrease to at least a first predetermined level, but before the emissions from the second ink or dye decrease to a second predetermined level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A reader comprising:
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an excitation source to excite an object with first non-visible light, the object comprising first indicia provided with a first ink or dye and second indicia provided with a second ink or dye, the second ink or dye comprising an emission decay time that is relatively longer than an emission decay time of the first ink or dye, the first indicia and the second indicia collectively conveying a first machine readable feature when illuminated with the first non-visible light, with the second indicia individually conveying a second machine readable feature after emissions attributable to the first indicia fall to a first level; and a code reader to read at least the second machine readable feature after emissions attributable to the first ink or dye fall to the first level and before emissions attributable to the second ink or dye fall to a second level. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification