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Re^3: Is there a CPAN module that distorts an image to make it only human-readable?by Joost (Canon) |
on Apr 19, 2005 at 15:11 UTC ( [id://449276]=note: print w/replies, xml ) | Need Help?? |
I think quite a lot of blind people actually use a braille reader, so counting on audio isn't foolproof, though I guess most will have audio anyway - unless they also have hearing problems. However, creating audio checks is hard, apparently:
(From the CNET article referenced in the w3c article mentioned above):
Microsoft's Hotmail service provides an audio alternative to its visual test, in which letters are read aloud instead of being displayed in a graphical file. But one such audio file--deliberately garbled to prevent its being read by a computer--was unintelligible to four out of four CNET News.com reporters, all with good hearing, who tried to decipher it. It's better than no alternative, ofcourse.
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