| 摘要 |
The present invention relates to a visual cryptography system. The system comprises a first and a second display device (1, 2), arranged for, upon being superimposed on each other, reconstructing a graphical message from two respective shares. At least one of said display devices (1, 2) comprise means for facilitating determination of the resolution and pixel size of the other. At least one, preferably both, of, said display devices (1, 2) is arranged to scale the resolution and pixel size of its share to a mutually supported resolution and pixel size, and preferably to a mutually supported smallest common multiple resolution and pixel size.
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