What systems are available for internal document control?
There are a wide variety of systems available for the control of internal documents. These vary from the document management systems that control access, versions, import and export and authorization to those aimed more towards the modern concept of document collaboration controlling input from multiple authors together with review and authorization. All these systems really rely on access control mechanisms for their effectiveness because in most instances digital rights management (DRM) type controls are not appropriate. However in some cases DRM controls may also be required where it is necessary to prevent people taking printouts or copies of documents and giving them to others (or having them stolen or misled). As a result other measures are needed where DRM controls are to be applied to internal document control.