Re:[EXPERIMENT] I attached a file to a tweet
by hoop on Monday January 23, 2012 @01:43AM
(#3499378)
You don't need to use exif data. Many tools use the often ignored alpha channel of each pixel. In this case, you have X x Y bytes of available storage where X and Y are the width and height of the image.
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Re:[EXPERIMENT] I attached a file to a tweet
by baddox on Monday January 23, 2012 @03:24AM
(#3499563)
For lossless images, you could also use the least significant bit of each color channel of each pixel to represent your binary payload. I doubt this would be noticeable, especially with a photograph.