How to protect PDF from distribution?

Question

Copyright

Gentlemen, some decent option is required to protect the periodical in PDF from copying (of course) and, most importantly, from distribution. Acrobat Pro is not suitable because his defense is no defense at all.
You need either a binding to the hardware, or online browsing by login / password with one browsing session (like Microsoft tutorials on Skillpipe).
The solution may be paid (most likely it will be).
I really want maximum compatibility with platforms / systems and the absence of hemorrhoids with antiviruses, minimal labor costs for opening an encrypted file by a legal reader.
It is desirable to be able to generate keys with different levels of access, but it must be possible to generate separate keys for each file (providing different levels of access to different files), and not one key for all files.
Starforce's protection of PDF documents would be almost perfect if it weren't for their workspace system.

Answer 1

If a person wants to spy, he spy and so (to the extreme - take a picture and recognize).
But legal users will only make hemorrhoids.

Answer 2

No way

Answer 3

Nominal copies with embedded personal data of the buyer.
But, as it is rightly said, no one canceled screenshots and OCR, so any protection is very conditional.

Answer 4

Take a look at Truscont's
TrusCont Enhanced DVD-R discs with built-in
TrusCont Secure Flash Drive copy protection. USB Flash Drive with built-in copy protection.
Files are encrypted with reference to a unique code on the media, the security manager (should be launched first) decrypts them directly in Acrobat / Foxit, while blocking copy / paste resaving, printing and printscreen.

Answer 5

You can bypass the Starfors system of workspaces on SFLetter.com - you can simply send letters with protected documents there.

Answer 6

I can offer you a solution to your problem. Get in touch if needed.
Write to [email protected]
ASTAR software