Claims
- 1. A method, comprising:scribing a code onto an item; applying a coating to said item, said coating including at least one rare earth element, wherein an index of refraction of said coating is substantially the same as that of said item, and said coating covers said code, wherein said code cannot be substantially viewed under ordinary visible light conditions; and assigning said code to a merchant.
- 2. The method of claim 1, wherein said code is encrypted.
- 3. The method of claim 1, wherein said item comprises glass.
- 4. The method of claim 1, wherein said scribing comprises at least one of laser etching, chemical etching, and mechanical etching.
- 5. The method of claim 1, wherein said scribing comprises scribing said code onto said item at a plurality of locations, andwherein a number of said plurality of locations and positions of said plurality of locations are contained within said code.
- 6. The method of claim 1, wherein said at least one rare earth element comprises two or more rare earth elements not present in said item.
- 7. The method of claim 1, wherein a thickness of said coating is within a range of 0.1 to 10 microns.
CROSS-REFERENCE TO RELATED APPLICATIONS
The present Application is a Divisional Application of U.S. patent application Ser. No. 09/182,280 filed on Oct. 29, 1998.
The present application is related to U.S. patent application Ser. No. 09/182,269, filed on Oct. 29, 1998, now U.S. Pat. No. 6,226,619 to Arnold Halperin et al., entitled “METHOD AND SYSTEM FOR PREVENTING COUNTERFEITING OF HIGH PRICE WHOLESALE AND RETAIL ITEMS” having IBM, assigned to the present assignee, and incorporated herein by reference, and to U.S. patent application Ser. No. 09/182,279 filed on Oct. 29, 1998, to Don Coppersmith et al., entitled “SYSTEM FOR PROTECTION OF GOODS AGAINST COUNTERFEITING” having IBM, assigned to the present assignee, and incorporated herein by reference.
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