Fileopen

Since 1995 Complete Picture have been delivering secure PDF documents on CD to leading Architects, Local Authorities and Construction Companies using technology form Fileopen Systems. FileOpen Publisher ensures that your PDFs will not be redistributed without your permission. Add access controls such as expiration, printing limitations, and locking to specific media types. Complete Picture can implement Fileopen secured solutions for your CD ROM ensuring your documents can only be used as intended.
There's more information on the Fileopen website:
www.fileopen.com
The proven solution for secure distribution of PDF documents from your Web site or Intranet. WebPublisher offers a high level of security combined with ease-of-use for end-users. Plugs into any user database, server, and your existing authentication schemes. Encrypts PDFs on-the-fly or in batch mode. Prevent saving of files, restrict printing, and embargo/expire access.
We have experience of implementing this system on over 0.5 million CD’s with direct feedback from 1000’s of customers. We understand how to manage distribution of encrypted documents the benefits and the pitfalls.  Features of the Fileopen system include
Batch encryption and usage restrictions on directories of PDF files
Standard security options to prohibit printing, copying, editing, or changing notes
Set expiration periods on documents and subscriptions
Limit the number of times a document is opened
Lock documents to website, PC or CD-ROM
Set documents to open only from a Web browser
Print controls limit number of printouts and duration of print privileges, disable print-to-file and re-Distilling of PDFs, limit printing of individual pages in a document, and meter printing with FileOpen PrintPoints
Dynamic overprinting prints username, machine ID, date, and time of printout (invisible on screen)
Installer Wizards allow point-and-click generation of the Invisible Installer, Smart Installer, Authorized Installer, Multi-Product Installer, and Foreign Language Installer