- From: Ian Jacobs <ij@w3.org>
- Date: Fri, 29 Dec 2000 15:14:04 -0500
- To: w3c-wai-ua@w3.org
Hello,
At the 20 December teleconference [1], we resolved for issue 420 [2]
not to make any change to checkpoint 8.3 regarding prompting before
following a fee link. This is a request to reconsider that decision.
In the 23 October draft [3], the checkpoint reads:
8.3 Render in a distinct style those links that have been
marked up to indicate that following them will involve a
fee and allow the user to configure this style.
For graphical viewports, offer at least three
rendering options, including colors and fonts.
Allow the user to select from among the range of system
colors and fonts.
Here's why I think the decision should be reconsidered:
- We argued that since this is not a pervasive problem
today on the Web in terms of *user agent responsibilities*,
it was not urgent to address with a prompting requirement
in UAAG 1.0.
- However, this is done today using plug-ins. In fact,
the 25 August 1999 Micropayments Working Draft [4] states:
<BLOCKQUOTE>
For current browsers, embedding information in HTML
pages MUST be done using a Per Fee Link Handler, which
MUST be a plug-in or JAVA Applet.
</BLOCKQUOTE>
- 8.3 and 8.X (proposed below) don't apply for formats
that don't allow authors to mark up fee links.
"Fee link" is a role of content that cannot be recognized
in HTML, for example. Thus, 8.3 and 8.x do not impose
additional burdens on existing browsers.
- If feel links are not used widely today, and browsers
don't yet implement these features, we should be ahead of
the curve and ensure that we require them to do the
right thing now. I recognize that we need implementation
experience to see whetherexisting plug-ins allow
configuration to prompt users before charging them.
- It is always possible to claim conformance with the
addition of a plug-in that supports fee links.
Thus, after reflection, I support the reviewer's
suggestion (which the WG agreed was a good idea) and
believe that:
1) It's a P2 requirement to prevent activation of a link
that may involve a fee.
2) It's a P3 requirement to inform the user through style
that following a link may involve a fee.
Therefore I propose:
1) Changing 8.3 to a P3 checkpoint.
2) Adding the following P2 checkpoint:
8.X Allow configuration so the user is prompted to confirm
the activation of any link that has been marked up to
indicate that following it will involve a fee.
Comments:
a) Checkpoint 8.5 already allows the user to query links for
information about fees.
- Ian
[1] http://lists.w3.org/Archives/Public/w3c-wai-ua/2000OctDec/0430.html
[2] http://server.rehab.uiuc.edu/ua-issues/issues-linear-lc2.html#420
[3] http://www.w3.org/TR/2000/WD-UAAG10-20001023/
[4] http://www.w3.org/TR/1999/WD-Micropayment-Markup-19990825
--
Ian Jacobs (jacobs@w3.org) http://www.w3.org/People/Jacobs
Tel: +1 831 457-2842
Cell: +1 917 450-8783
Received on Friday, 29 December 2000 15:14:05 UTC