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Is there any package that can easily allow you to obfuscate a Latex->PDF generated document such that copy-paste is not longer possible and produces random letters for instance.

And if yes, is it possible to control which letters get modified?

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marked as duplicate by Benedikt Bauer, Svend Tveskæg, Jesse, Peter Jansson, Claudio Fiandrino Mar 12 '14 at 11:28

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