Well, I for one tend to avoid media like the plague (although quite
obviously I don't do the same for cliches).
Video, audio, and PDFs are things I don't enjoy on a website.
Now, that aside, there's another major problem: accent. Who's to say I
could understand what you were saying, if you said "star"?
There is no unambiguous way to represent words through audio.
Mark
On 02/11/05, David Gerard <dgerard(a)gmail.com> wrote:
With various discussions around Wikipedia of captchas
to impede
vandalbots, I was wondering how usable audio captchas actually are for
those who can't see images. Most sites with visual captchas offer an
audio option ... but what's the actual usability of these? Are they a
minor impediment, as a visual captcha is, or a major usability
problem? Is there data on this?
- d.
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