PDF Watermarking: How to add dynamic watermarks to a PDF file
How to add dynamic watermarks to a PDF file. Dynamic variables are automatically inserted at print/view time so you only have to protect a PDF file once in order to customize it individually for each user. Safeguard PDF Security supports view and print watermarks and dynamic variables for user and system information. Unlike Adobe Acrobat watermarks, Safeguard PDF watermarks cannot be easily removed since users cannot enter a password to remove PDF restrictions.