Jim replied to Henrik:
> On Thu, Jul 05, 2007 at 07:09:24PM -0400, Henrik De Gyor wrote: 
>> Does DSpace have a DRM (Digital Rights Management) component available? Can 
>> DSpace track the rights of a single asset (i.e. photograph), used multiple 
>> times in different places ouside of DSpace, but with different license 
>> expiration dates for each use?   
> 
> No. In fact, this is a problem that is generally unsolved in the world at 
> large (so called "digital watermarking" is presumably what you're talking 
> about). DSpace has always been more geared towards open access.

The short answer is, as Jim noted, this is not what DSpace is about.

The slightly longer answer is, watermarked images and other media can 
easily be managed within a DSpace; in fact, with an appropriate 
watermarking technology, the identifier used for the object in the 
DSpace could be used as the watermark's payload. Watermarks have been 
able to do this for more than ten years, and this basic capability has 
always been available to DSpace adopters (although I don't know of 
anyone who has actually done it).

The compliance aspect of Henrik's question is a totally different 
matter. Except for the very, very limited case where "usage" means 
archiving and access within other DSpaces, the general problem of 
compliance checking is WAY out of scope for DSpace. And in the case of 
usage within other DSpaces, watermarks are not required.

The longer-still answer is, this sort of in situ compliance checking has 
been on the DRM "Holy Grail" list for more than ten years, and scale 
makes it an almost intractable problem. The first to attempt it was 
Digimarc, with limited success, due to scale and visibility of targets. 
The problem is made slightly more tractable by leveraging the scale of 
Google, but that still only covers a subset of the placement rights that 
would be licensed. But even holy Google is only a minor deity, and does 
not see everything.

In other words, you really DO NOT want to attempt this yourself. And if 
your boss or client desperately wants you to, hire out the spidering and 
archive the watermarked media as I suggested.

And remember, "I told you so!" ;)

John
PS: This is my personal opinion as one of the old-timers in world of 
"DRM" and not that of HP...


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