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Method for making color-changing anti-counterfeiting digital identifier
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A production method and technology of anti-counterfeiting marks, applied in the field of digital anti-counterfeiting, can solve problems such as the reduction of digital anti-counterfeiting credibility, and achieve the effect of improving the strength of anti-counterfeiting
Active Publication Date: 2011-10-05
江苏南大数码科技有限公司
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Problems solved by technology
However, in actual operation, due to frequent code theft, the credibility of digital anti-counterfeiting is reduced.
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Embodiment 1
[0022] Select 4 color color sequence C{black, red, green, yellow}, the first algorithm=(∑(bit value×bit sequence))&0xfff, the second algorithm is to rotate right by bit value;
[0042] Select 4 color color sequence C{orange red blue black}, the first algorithm=(code value^(∑(bit value×bit sequence)))&ffffffff, the second algorithm is to rotate left by bit value+bit sequence;
[0061] Print each digit a1, a2, ..., a14 of A in the corresponding color c1, c2, ..., c14 on the product lab...
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Abstract
The invention discloses a method for making a color-changing anti-counterfeiting digital identifier. The method comprises the following steps of: (1) selecting k different colors to form a color sequence C, generating a group of random digital sequence A with n-bit length, and processing the random digital sequence A according to a first algorithm to acquire a binary sequence B; (2) processing all digits in the binary sequence B and the random digital sequence A according to a second algorithm to acquire corresponding binary sequences respectively, performing modulus operation on the acquiredbinary sequences respectively to acquire color sequence factors of all the digits in A, and taking corresponding colors from the color sequence C; and (3) sequentially printing the corresponding colors of all the digits in A to a product tag or an anti-counterfeiting identifier. According to the invention, color information visible for a customer is added in the traditional digital anti-counterfeiting, so that the anti-counterfeiting strength of the digital anti-counterfeiting can be effectively improved; and the information is difficultly decoded by a fabricator because the fabricator needs to own not only digits but also colors corresponding to all the digits, but the digits per se do not contain the color information.
Description
technical field [0001] The invention belongs to the technical field of digital anti-counterfeiting, in particular to a method for making a color-changing anti-counterfeiting digital mark. Background technique [0002] Digital anti-counterfeiting technology is to generate a unique set of numbers for each product, which is the product identity code, print the set of numbers on the product label or anti-counterfeiting mark through printing technology, and register the product information corresponding to the number on the computer of the certification center. After the product goes on the market, consumers send the number on the product label or anti-counterfeiting label back to the certification center for certification through the phone number, SMS special service number or network address published on the product label or anti-counterfeiting label. However, in actual operation, since code theft occurs from time to time, the credibility of digital anti-counterfeiting is reduc...
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