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Posted by Kim Andrι Akerψ on 02/19/06 02:12
Blackhawk@idonthaveone.com wrote:
> On 17 Feb 2006 11:04:08 -0800, "ZeldorBlat" <zeldorblat@gmail.com>
> wrote:
>
> >
> > Blackhawk@idonthaveone.com wrote:
> >> I have a guest book and someone is raising hell with me on it. I
> must >> receive 50 entries a day and all bogus. Don't know why they
> have >> picked my site but I have to do something now to correct the
> on going >> problem.
> > >
> >> I need a security feature for my guest book. I have seen some on
> other >> boards where there is a series a letters and or numbers only
> the human >> eye can pick out and enter in order to submit an entry
> into the guest >> book. Can someone direct me to the source of this
> security script in >> php, please!
> >
> > <http://www.google.com/search?q=captcha>
>
> I see this is a pay service. ;(
Not necessarily.
CAPTCHA = "completely automated public Turing test to tell computers
and humans apart", according to Wikipedia.
http://en.wikipedia.org/wiki/Captcha
When reading the Wikipedia entry a bit further, you'll see that it's "a
type of challenge-response test used in computing to determine whether
or not the user is human".
The Wikipedia entry for captcha also lists external links to specific
code examples and (open source) projects that implements this technique.
--
Kim AndrΓ© AkerΓΈ
- kimandre@NOSPAMbetadome.com
(remove NOSPAM to contact me directly)
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