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Visual Verification: Research Study on Audio CAPTCHA Technology

June 18, 2008 • Darrell Shandrow Hilliker

Jennison Asuncion reports that a study of audio CAPTCHA technology is being conducted at the University of Washington:

A friend of mine, Jeff Bigham, a Graduate student at the University of Washington in the Department of Computer Science and Engineering is conducting research into audio captchas, the goal being to use the results to inform future development. Whether you are sighted or have a visual impairment, if you are interested in taking part in the research, go to – the study should take no more than 15 minutes, and you will need to install the latest Flash player, if you don’t have it on your system. Feel free to pass this along to others who might be interested.

We urge everyone to participate in this potentially important study which may serve to impact future development of audio CAPTCHA as well as the overall accessibility of human verification and visual authentication technology.

One opinion on “Visual Verification: Research Study on Audio CAPTCHA Technology

  1. Hi Darrell and everyone who reads this blog,

    Did you all ever hear something about Web Visum, a plugin that has a function to solve visual CAPTCHA’s, but is made only for Firefox? Do you think that a site which offers that to a user is secure or can be trusted? They guarantee that they won’t let spammers abuse this feature, and have an account-based service for that purpose, but I always like a second opinion. The petition made for Yahoo! still didn’t show any practical result, so if someone is able to crack their CAPTCHA, why not make use of that resource? After all, the way the plugin cracks the image works even to deaf-blind people!!!

    Thanks for any reply,
    André Baldo.

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