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Visual Verification: FormShield Protects .NET Based Web Sites While Avoiding the "No Blind People Allowed" Sign

July 19, 2007 • Darrell Shandrow Hilliker

Kevin Gearing has released an outstanding CAPTCHA (visual verification) solution for protecting .NET based web sites against abuse, while permitting access to blind and visually impaired users. FormShield is donationware that provides both an audio and visual CAPTCHA, including correct audio playback of CAPTCHA strings containing mixed case characters. We thank Kevin Gearing for including the audio playback functionality in his CAPTCHA solution, and put this up as one more example of a solution that should be implemented immediately on all web sites that currently do not provide an acceptable alternative to their visual only CAPTCHA schemes.

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