One use of "watering" is what I call "branding." That is, you put "watermarks" on your documents to identify them as yours, before sending them out over the "net." These watermarks are usually invisible, but perhaps they need not be, if all they do is to act as your "signature."
The danger of watermarking is "tampering." I can think of two kinds, 1) removal, or 2) altering. What are standard or desirable security measures for these problems?
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