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Image Watermarking for Tamper Detection - Cina L. Wong & Associates, Ltd. Court Qualified Document Examiner Cina L. Wong


A person can claim they signed a contract in 2001. However, after conducting a watermark search and/or requested paper analysis, it may be determined that the questioned document with the 2001 date and signature was actually produced after the purported 2001 date. Since the paper was produced after 2001, then it would be impossible for the contract to have existed in 2001.

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