Quote:
Originally Posted by borked
This is fine for transmitting hidden data between receiving parties, but I think it has its limitations, especially in video,....
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The color shift comment was targeted at images only to make it invisible for the uploader/surfer to actually see the info.
Also using 99% transparent text is basically invisible to the naked eye.
But, a program can compare the before image to the after image and easily tell the difference. If the surfer doesn't have the exact "before" image they can't make the comparison.
ottopottomouse:
The color-shift would be done by changing the color over small rectangles in different parts of the image. Again the visual change is so small(aprox 0.001%) that only a computer comparing before & after images could actually "see" it.