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Are you trying to protect the data, or the formulas used to produce the data? The latter is easy, of course - just produce a PDF or a plain-text version without the formulas.
I know Adobe has a product that allows you to send a .pdf file that can't be edited, copied or even printed.
Yes, they do, and it doesn't work. Like I said, take a screenshot, or open the PDF in a non-Adobe PDF browser and you have access to every function, including printing, exporting, etc.
Any kind of digitally-enforced copy protection is more about kidding the data owner into thinking it is safe, and putting off casual attempts to access the information by the end-user.
Is there any other way of presenting the data which only shows partial information, not the whole thing? Like a web app in which the user can search for specific figures without being able to download the whole file?
[edited by: encyclo at 9:20 pm (utc) on Jan. 11, 2005]
Anything you send out can be trivially copied if it can be displayed. Your best bet is to make it so that whoever you give it to does not want to copy it or use it in any way that puts them at risk.