The following is an extract from a RFQ I recently received:
I have a group of pdf files. I want authenticated users to be
> able to search and view the files by certain criteria. There are
> a few parent criteria that will need to associated with file data,
> but most criteria values are already in the pdf files. The pdf
> files must be encrypted and secure at all times, when housed in
> the database, when searched for criteria, and when viewed by
> users. A secure location online where users can log in, search
> and then download or view the secure pdf files is preferable.
> Users will not be permitted to save or distribute the pdf files,
> although they may be allowed to print.
There are further idiocies, such as failure to specify OS.