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I would suggest looking at either ActivePDF's DocConverter (http://www.activepdf.com) or AdLibSys's AdLib eXpress (http://www.adlibsys.com).
Are you talking about simple "stamping" of additional data, or real steganographic watermarking?
Answer: We are contemplating adding a State Logo as a background watermark to "brand", published, public documents.
Both of those products offer such a feature - no problem there...
Also wanting to imbedd something that we can authentic the document back to (such as an unique pin code) that if the document was altered, the pin code would be lost, but I DO NOT want to get into distributing Public Keys or passwords.
Well, digital signature technology is the only way to achieve document authentication of this nature. You won't need to distribute anything to users, but you will need some additional tools for doing the signing...
Leonard -- --------------------------------------------------------------------------- Leonard Rosenthol <mailto:[EMAIL PROTECTED]> Chief Technical Officer <http://www.pdfsages.com> PDF Sages, Inc. 215-629-3700 (voice) 215-629-0789 (fax)
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