PDF DRM & Offline use of Documents

The importance of offline access for document DRM.

Whenever something on the computer stops working it’s always the fault of the provider of the end user application.  And if DRM controls are present any failure is bound to be the fault of the evil DRM provider regardless of the facts. Read more

Document Watermarking

Watermarks for document security.

Watermarking is quite an old technique, appearing to start in the 13th century when it identified the papermaker or the trade guild manufacturing the paper.  So right from the beginning it was about preventing forgery and identifying the source of the paper.  The Gutenberg Bible was watermarked. Read more

Document Expiry using DRM controls

Using DRM to expire documents.

At the risk of stating the obvious, not all PDF documents are supposed to last forever.

It would be nice if books, fiction or non-fiction, had that ability.  But many historic works have been lost for all time because the library they were in was burned down (this problem still goes on today). Read more

The (surp)rise of HTML5

Is HTML5 going to take over the DRM world, or are more established formats such as PDF likely to prosper?

Lately it seems that the DRM world has found HTML5 again, perhaps having tired of the various machinations of the XML world (a huge library of XML standard message formats is available at XML Standards Library), or perhaps because W3C decided to include an API  to discover, select and interact with DRM systems as well as with simpler content encryption systems.  It does not define what DRM may or may not be.  In fact the design of the system is to push DRM handling and management to the page authors. Read more