- From: Dave Singer <singer@apple.com>
- Date: Tue, 19 Mar 2002 09:15:42 -0800
- To: Chris Lilley <chris@w3.org>, Erik Hodge <ehodge@real.com>
- Cc: geoff freed <geoff_freed@wgbh.org>, w3c-wai-pf@w3.org, w3c-wai-pf-request@w3.org, www-tt-tf@w3.org
At 16:20 +0100 3/19/02, Chris Lilley wrote: >On Monday, 18 March, 2002, 20:01:40, Erik wrote: > >EH> At 12:26 03/18/2002 -0500, geoff freed wrote: >>> >Its not clear to me what III.10 would mean in practice. >>> > >>> >>>Erik Hodge originally proposed this. I think he means that authors should >>>be able to keep users from downloading the text stream, similar to how >>>users can be prevented from downloading .RM files. How this can be >>>accomplished, I don't know. Erik? > >EH> Some authors want to protect their content from being copied. We >EH> should consider adding a feature that prevents a viewer from easily >EH> copying TT text from presentations. You can't use the mouse or >EH> keyboard to select and copy RealText presentations, currently, but you >EH> can use the "view source" feature of the RealPlayer to view/select/copy >EH> all or part of the .rt file if the server is set to provide that. > >EH> With TT, we may want to enable the author to describe in the TT file >EH> whether or not the user agent should allow selection+copying of the >EH> presented text at any point in the presentation. > > >Ah, ok, the 'pulling the wool over the eyes' school of copy >protection. It suffices for impressing clients, but offers no actual >security at all in practice. I think there is a world of difference between enforced and notified restrictions. I regularly get Acrobat documents with text copying disabled, and that is usually sufficient to stop me even though it's not hard to bypass. >There were calls for that sort of thing in SVG, but we declined >because it gives the appearance of solving a problem without actually >doing anything. I think the mechanism has value as long as the author understands what it does and does not do. > >In addition, it compromises accessibility to not be able to select text. That, I agree, is the royal pain about copy-menu-protected documents. -- David Singer Apple Computer/QuickTime
Received on Tuesday, 19 March 2002 12:24:09 UTC