A picture is a thousand words

Created: Saturday, 01 June 2002 Written by Correspondent
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If you are dead set keen on protecting your privacy and your intellectual property in the digital realm then you will be interested to learn about steganography. It allows you to watermark or embed text messages into binary files (audio, video, images) and is completely undetectable unless you happen to know it's there (and know the key) or can compare the watermarked binary file with the original binary file (in which case you will notice a size difference in the two files and that's all). Here's a good place to start: http://www.cl.cam.ac.uk/~fapp2/steganography/index.html