Title: Method of preventing file inset replacement
Application Number: 200410001192 Application Date: 2004.02.04
Publication Number: 1558385 Publication Date: 2004.12.29
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G09C5/00
Applicant(s) Name: Wu Jianming Address: 100081
Inventor(s) Name:
Attorney & Agent:
Abstract:
     The method of preventing substituting file insertion features that 2D matrix code is used as the specific data expressing symbol of each page. The 2D matrix code in each page can not be used independently, and scanning and unscrambling all the 2D matrix code can restore complete original data. The present invention has effect similar to a perforated rider seal, and can ensure the completeness of information the file or the certificate carries.
Time: 13
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