At 17:08 08/11/00 +0000, J Adrian Pickering wrote:
 but found
none in the random selection of the 30 articles  I looked in.
Acrobat also has mechanisms to lock the article to prevent it from
being modified.  These mechanisms too did not seem to be used by
any of my publishers. Which I found quite surprising,
maybe even distressing.

Are we going to standardise on PDF? This is pretty good 'electric paper'
but we must not think that published work is always on 'paper'. There is NO
excuse for not locking the document.

Why should a pdf be locked? Getting away from the idea that work is always
on paper says to me that it should not be read-only *at the user end*. The
emerging means of authentication described by Adrian should be an excellent
way forward, but why the need to lock as well?

I ask because for projects such as ours, which involves adding third-party
reference links to pdf documents, locking is not insurmountable but is
against the principle of what we are trying to demonstrate.



Steve Hitchcock
Open Citation (OpCit) Project <http://opcit.eprints.org/>
IAM Research Group, Department of Electronics and Computer Science
University of Southampton SO17 1BJ,  UK
Email: sh...@ecs.soton.ac.uk
Tel:  +44 (0)23 8059 3256     Fax: +44 (0)23 8059 2865

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