FWIW I have asked on www-voice if there is an use of audio CAPTCHA in IVR applications. http://lists.w3.org/Archives/Public/www-voice/2007JulSep/0014.html This could help us design the prompting to explain the media choice and the prompting to explain the CAPTCHA task in the challenge-medium-selection step in the selectable-modality CAPTCHA dialog. Gregory has given us an example text for each of these in his remarks on the Google dialog. AlReceived on Saturday, 14 July 2007 15:29:13 GMT
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