http://www.google.com/recaptcha

easy to implement and secure

On 24 January 2011 16:11, Shang Tsung <shangtsung71 (at) gmail (dot) com [email concealed]> wrote:
> We are planning to use a CAPTCHA in order to stop spam engines from
> filling our Online Forms. From a quick research I made, I found there
> are good and there are bad types of CAPTCHA.
>
> Does anyone know if there are any standard and secure implementations
> of CAPTCHA that we can use?
>
> Any good articles on the subject?
>
> Thanks,
> Shang Tsung
>
>
>
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