| 摘要 |
<p>A method of incorporating a fingerprint into a printed work, which fingerprint is substantially invisible to the naked eye but can be recognised by image processing techniques. The method comprises the steps of sending digital data corresponding to an image to be printed to a printer driver (5), incorporating at least one fingerprint into the data during processing by the printer driver (5), and sending the data processed by the printer driver (5) to a printer (2).</p> |
