Technology 

For a CaptchaAd to be displayed, Flash version 10 and JavaScript must be enabled.

The Adobe Flash Player is a browser plug-in that is automatically installed in most browsers. For more information about the Adobe Flash Player »

CaptchaAd generally runs in all browsers that support Flash. The iPad and iPhone do not support Flash.

If CaptchaAd is not mounted correctly on a website (see Integration Guidelines), then it means that either the Flash plug-in or JavaScript are not enabled, at which point a CaptchaAd reCAPTCHA will be shown to ensure a minimum level of security.

Thus far on the server side there are variants for both PHP and Java. Other variants are being planned and may also be offered on request.