ANTI-COUNTERFEITING MARKING WITH ASYMMETRICAL CONCEALMENT

摘要

An anti-counterfeiting method associates the first code with an article to be authenticated to identify the article, and associates a second code with the first code as a verification code to verify the first code. Both the first code and the second code are reproduced on the article. The reproduced first code is machine-readable (e.g., contained in a RFID tag), while the reproduced second code is covert and concealed from normal viewing by a concealment means such as a scratch-off material. An authorized person (e.g., a consumer) is allowed to conditionally remove the concealment to reveal the covert code. The first code and the revealed second code are used to verify the authenticity of the product with a verification center. During the verification, the first code identifies the article, while the second code verifies the first code and thus the authenticity of the associated article.