On Oct 18, 11:21 pm, Preventer of Work <not_t...@nospam.xxx> wrote:
> laredotorn...@zipmail.com wrote:
> > Hi,
>
> > I'm using PHP 4.4.4. I want to block automatic submissions from
> > spammers on our web site, so I'd like to use some PHP libraries that
> > generate those image graphics and require the user to type the
> > characters in the graphics. Do you have any recommendations on things
> > you have used that are easy to implement and effective?
>
> > Thanks for any advice or experiences you've had, - Dave
>
> Google will find some libraries for you. And it will as not all
> spammers have the full set of tools.
>
> You might consider two other options:
>
> 1) Ask a random question (you may want a lot of questions) such as 'How
> many legs does a dog have?'. This is still accessible, easy for humans,
> not so easy for bonehead spammers who only care about captcha graphics.
>
> 2) One place uses a wall of small thumbnails with pictures of puppies
> and kittens. User has to say which ones are the kittens (maybe 3 out
> 36 images are kittens). I don't recall the site, but it would be easy
> to implement.

Hey Preventer of Work, The idea of the question is a really good one.
Do you come up with your own list of questions or is there a pre-
written list out there?

Thanks for the suggestion, - Dave