A French company has recently developed an ink that cannot be copied.
The working principle of the ink is to change the shape of the ink by merging some of the molecules in the ink, so that the ink is invisible under exposure, that is to say, the flash operation device of the copier or the beam of the scanner cannot be copied to the ink. It is impossible to copy the document.
The working principle of the ink is to change the shape of the ink by merging some of the molecules in the ink, so that the ink is invisible under exposure, that is to say, the flash operation device of the copier or the beam of the scanner cannot be copied to the ink. It is impossible to copy the document.
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