Abstract: There is provided a computer system including a first operating process operating in a non-modified operating environment and having at least one user operating command which is normally employed only in a given mode in the first operating process, and at least one second operating process which does not include encryption, the improvement comprising: a trigger for enabling a user operating the first operating process to initiate the second operating process, the trigger comprising said at least one operating command used in a mode other than said given mode.
Abstract: A system and method for selectable encryption of documents employing a document generator and a user-controlled document encryptor operative to encrypt user-selector portions of a document generated on document generator.
Abstract: Apparatus for scrambling documents including apparatus for providing output signals representing the contents of a document, apparatus for operating on the output signals to produce modified output signals representing a scrambled version of the document including a system of reference marks to be used during later descrambling for registration, scaling, rotation, shifting and defect compensation and writing apparatus receiving the modified output signals and producing a scrambled version of the document.