Re: Graphics generation and website protection.

Hello Henry,

I do not know exactly where to post this because I don't know exactly
what I am asking for. I have noticed that a number of websites, that
allow readers to comment on articles, protect themselves from
automated responders by generating a graphic image of random numbers
and letters that would be hard for anything other than a human to
read. People are required to enter that random combination in a
submission box before their comments are posted.

I don't know what this technique is called, but I want to find out how
it is done so that I can add similar protection to a website that I am
working on.

I am hoping that someone here will know what I am talking about and
give me a place to look.

It's called a CAPTCHTA test a little google search will get you where you want to:

http://www.google.nl/search?hl=en&safe=off&sa=X&oi=spell&resnum=0&ct=result&cd=1&q=captcha+.net&spell=1

Includign useful information, components and self-made stuff.

--
Jesse Houwing
jesse.houwing at sogeti.nl


.

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