12.3 Watermark Code Query
Select "Watermark -> Watermark Code Query" to retrieve the corresponding computer information based on captured dot matrix watermarks or hidden print markers.
12.3.1 Dot Matrix Watermark
Dot Matrix Meaning
A dot matrix watermark overlays a pattern of dots containing computer information onto printed documents or the computer screen. The dots are arranged in groups of nine (3×3 grid) and repeated across the surface.
Both screen and print watermarks can display dot matrices:
- Screen dot matrix: includes computer name, user name, IP, and date.
- Print dot matrix: includes computer name, user name, IP, date, print job, printer description, page number, and application.
A single dot matrix group is illustrated as follows:
Note:
- 1. The first dot matrix pattern is the starting bitmap and does not contain any information.
- 2. For printed watermarks, each distinct print job generates a unique dot matrix pattern.
- 3. For screen watermarks, the dot matrix changes according to the computer's information (computer name, IP, date). If this information remains unchanged (daily cycle) and software window watermarking is enabled, the same dot matrix pattern will appear on all software windows.
Dot Matrix Watermark Code Lookup
Lookup Steps:
- Locate the starting bitmap pattern in the corresponding watermark. Using this starting pattern as a reference, move three positions to the right and three positions down to obtain a 3×3 dot matrix pattern.
- Excluding the starting pattern, read each pattern from left to right, top to bottom. Match each pattern against the code table to obtain the corresponding letters or numbers, forming a complete code string.
- Select the watermark type for this lookup. The supported dot matrix watermark types are print watermark and screen watermark. Enter the obtained code string and click [Search] to retrieve the computer information represented by this dot matrix pattern.
12.3.2 Hidden Print Watermark
Steps to query a hidden print watermark:
- In Watermark Type, select Hidden Print Watermark.
- In the printed document, locate the marked point. Enter the corresponding character in Marked Character, and provide the surrounding text in Context. There is no limit on context length—it only needs to include actual text adjacent to the marked character, either before or after.
Example: If the sentence is "This hidden watermark test passed successfully" and the mark is placed under the character W, enter W in Marked Character. For Context, you may enter "Hidden Watermark", "Hidden Wat", "Test", or "Test Passed Successfully".
- Click Query to retrieve the corresponding print document information.
12.3.3 Document Watermark
Steps to query a document watermark:
- In Watermark Type, select Document Watermark.
- In the file containing the document watermark, enter the watermark ID into Input Code String.
- Click Query to retrieve the corresponding document watermark information.
Notes
- The watermark template must include an ID in its content; only then will the watermark carry an ID.
- Visible watermarks display the ID directly. For invisible watermarks, the ID must be extracted using the Document Watermark Tool.
12.3.4 Circulation Information
Steps to query circulation information:
- In Watermark Type, select Circulation Information.
- Use the Document Watermark Extraction Tool on the file containing circulation information. The extracted data includes the circulation ID. Enter this ID into Input Code String.
- Click Query to retrieve the corresponding circulation information.
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