What is the Watermarking option in Drumlin?

Typically an on-screen watermark is provided for all .drmz and .drmx secured PDF files – this is implemented when Drumlin is used to create a secured file. Note that this is fundamentally different from an on-page document watermark because screens can be zoomed and panned, so the watermark needs to be relative to the screen (or “viewport”) rather than the underlying document. If you want to add a watermark or watermarks to the underlying document as well it should be done using Adobe Acrobat (or similar PDF editing software) and added as a static watermark in such a way so it is present but does not interfere with viewing the file.

If our on-screen watermarking facility is enabled then it will always appear in the lower part of the viewable area on the screen, and can contain various “dynamic” variables as well as text. For example © xyz books, 2015 %a %I    – in this example the %a is replaced on screen by the authorization code issued to the user, so if you keep a record of which users you send which codes, the %a field essentially identifies the user. %I identifies the device being used, and there are other fields that can be used depending on the implementation and requirement. These are the most common and they are sufficient for most purposes. The %U field identifies the user, but this only applies to registered users, so is only appropriate for use with Corporate/Pro edition (e.g. JavelinPro readers and Drumlin, both of which have user registration). For on-Print watermarks the positioning variables in the watermarking screen can be used, but the font provided is currently of a fixed type, but variable size.