- From: Ben Maurer <bmaurer@andrew.cmu.edu>
- Date: Sat, 3 Nov 2007 15:08:17 -0400 (EDT)
- To: public-comments-wcag20@w3.org
Hi, On Sat, 3 Nov 2007, Loretta Guarino Reid wrote: > ---------------------------------------------------------- > Comment 1: Audio CAPTCHAs > Source: http://lists.w3.org/Archives/Public/public-comments-wcag20/2007Jul/0214.html > (Issue ID: 2355) > ---------------------------- > Original Comment: > ---------------------------- > > Audio CAPTCHAs need to include substantial amounts of background noise > in order to be secure against robotic attacks > > Audio CAPTCHAs must also not be captioned for obvious reasons. > > Proposed Change: > To 1.4.6 add: > > "Except if the audio is provided as a CAPTCHA and a non-audio CAPTCHA > is available that provides equivalent access" > > To 1.2.* add: > > "Except if the media is provided as a CAPTCHA and an image only > CAPTCHA is provided" (similar to the text in 1.1.1) > > --------------------------------------------- > Response from Working Group: > --------------------------------------------- > > We have changed 1.4.6 to include this exception. > > (changes marked with ***) > "1.4.6 Low or No Background Audio: Audio content *** that is not an > audio CAPTCHA and *** that contains speech in the foreground does not > contain background sounds, background sounds can be turned off, or > background sounds are at least 20 decibels lower than the foreground > speech content, with the exception of occasional sound effects." This addresses my comment. > Regarding captions, an audio-only CAPTCHA would not be considered > multimedia and would therefore not need to be captioned. Ok, that sounds good. -b
Received on Saturday, 3 November 2007 19:08:26 UTC