[liberationtech] Auto expiring document/files & 'rights to be forgotten'

[Frank Corrigan]

Does anyone know of any free resource that can make a PDF document, for
instance, inaccessible after a certain data, Most Digital Rights
Management (DRM) software prices are too prohibitive to make them a
practical solution to individuals.

This request is being prompted by a desire to find a practical way to
use rights to be forgotten, such as the new European Data Protection
proposals on 
http://www.digitaltrends.com/international/do-you-have-the-right-to-be-forgotten-eu-citizens-may-soon/

Of course there are ways to overcome document based DRM, but an open
source version could be useful to at least add a layer of privacy
protection to documents shared online, particularly when they contain
personal identifiers that unwittingly could become a risk to individuals
at a later date.

Frank