Captcha for ASP.NET AJAX


Prevent automated form submissions.

Part of RadControls for ASP.NET AJAX.
Captcha
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Various Protection Modes

Choose between the captcha, an invisible textbox or a minimum form submission time to prevent automated form submissions. View demo

Audio Support

Allow for your captcha control to be read via a generated audio code, ideal in accessibility situations. View demo

Validation Summary

Display your captcha errors in your existing validation summary control. View demo

Custom Character Set

Define which character set the captcha control will derive its image from. View demo

Localization and Accessibility

Provide a captcha interface for all of your users – regardless of preferred language. Thanks to the localization mechanism, based off of ASP.NET localization, you can serve the control in any language you have defined for your application. View demo