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Captcha image verification method is the most popular and effective
method to prevent spamming. A recaptcha script is one where verification
image of captcha script can be reloaded or refreshed by the user. So
when user is confused or can't read clearly the image text he or she has
the option to reload image to get a new image. This method not only
helps user, it also give extra level of security in preventing spamming.
An iframe object probably gives the easiest solution in developing recaptcha script. In this method an iframe object holding the captcha image is placed over the main document. Whenever users require refreshing the image, only the document inside the iframe getting refreshed producing a new verification image while the main window remains unchanged. more...
An iframe object probably gives the easiest solution in developing recaptcha script. In this method an iframe object holding the captcha image is placed over the main document. Whenever users require refreshing the image, only the document inside the iframe getting refreshed producing a new verification image while the main window remains unchanged. more...
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