Electronic verification machine for validating a medium having conductive material printed thereon
First Claim
1. An electronic verification machine, for use with a document having conductive material printed thereon, comprising:
- an array of sensor plates;
signal application means for applying an excitation signal to the document wherein said excitation signal is an alternating current (AC) signal;
document interface means for receiving the document and aligning the document with respect to said sensor plates and said signal application means; and
detection means operatively connected to said sensor plates for detecting presence of at least a portion the conductive material in response to the application of said excitation signal.
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Accused Products
Abstract
Determination of the authenticity and integrity of various types of documents such as lottery tickets is accomplished by using an electronic validation machine to compare data contained in electronic circuits printed on the document to document data printed on the document. The electronic circuits are printed on the document in conductive or semi-conductive ink using, for example the gravure printing process, and the presence or status of the circuits can be used to verify or authenticate the document. Data can be represented in the electronic circuits by the electrical signature of the circuit which is measured by the electronic validation machine. In the case of lottery tickets, a ticket can be validated by having the electronic validation machine determine which play spots have been removed from the ticket and comparing data on the ticket with the removed play spots to determine a play redemption for the ticket. Document verification or lottery ticket validation can also be accomplished by transmitting signature data from the electronic circuits via the electronic validation machine to a central computer for comparison with document data.
158 Citations
14 Claims
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1. An electronic verification machine, for use with a document having conductive material printed thereon, comprising:
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an array of sensor plates; signal application means for applying an excitation signal to the document wherein said excitation signal is an alternating current (AC) signal; document interface means for receiving the document and aligning the document with respect to said sensor plates and said signal application means; and detection means operatively connected to said sensor plates for detecting presence of at least a portion the conductive material in response to the application of said excitation signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification