Deactivation of a security feature
View Patent ↗A method to deactivate a security measure includes applying a first covert optically active security marker to a product or document; completing a transaction for the product or document; and applying a second optically active security marker to the product or document which indicates completion of the transaction.
1. A method to deactivate a security measure comprising:
applying a first covert optically active security marker to a product or document;
completing a transaction for the product or document; and
applying a second optically active security marker to the product or document which indicates completion of the transaction.
2. The method as in claim 1 wherein the second optically active security marker is a covert marker.
3. The method as in claim 1 wherein the second security marker completely covers the first security marker.
4. A method to deactivate a security measure comprising:
applying a first covert optically active security marker to a product or document;
completing a transaction for the product or document;
applying a second optically active security marker to the product or document which indicates completion of the transaction;
wherein a security reader detects the first and second security markers comprising:
indicating a pass when the first security marker is detected; and
indicating a fail when the second security marker is detected.
5. The method as in claim 1 wherein a composition of the first security marker and the second security marker is the same.
6. A method to deactivate a security measure comprising:
applying a first covert optically active security marker to a product or document;
completing a transaction for the product or document;
applying a second optically active security marker to the product or document which indicates completion of the transaction; and
wherein a composition of the first security marker and the second security marker is different.
7. The method as in claim 6 wherein a security reader detects differences in wavelength of emission or duration of emission from the first security marker and the second security marker.
8. The method as in claim 6 wherein a security reader detects differences in size or shape of the particles in the first security marker and the second security marker.
9. The method as in claim 5 wherein a security reader indicates a failure if a level of the composition is over a predetermined limit based on the superposition of the first security marker and the second security marker.
10. The method as in claim 1 wherein the first and second security markers are applied to a label, price tag, hangtag, package, carton, or garment tag of the product or document.
11. The method as in claim 1 wherein the document comprises a passport, visa, or ticket.
12. A method to deactivate a security measure comprising:
applying a first covert optically active security marker to a product or document;
completing a transaction for the product or document;
applying a second optically active security marker to the product or document which indicates completion of the transaction; and
wherein the second security marker is applied by a stamp pad, a pen, or a printer.
13. The method as in claim 1 wherein the transaction includes a sale, entry into an event, or entry into a country.
14. The method as in claim 1 wherein a first reader detects the first security marker and a second reader detects the second security marker.
15. The method as in claim 1 wherein a reader detects both the first and second security markers.
16. The method as in claim 8 wherein a spatial density of a first security marker is different than the spatial density of the second security marker.
17. A method to deactivate a security measure comprising:
applying a first covert optically active security marker to a product or document; and
applying a second optically active security marker to the product or document which indicates the completion of a transaction for the product or document.