Image verification before page submission

[shoveswp]

I'm looking to add a section to a web based form that prevents bots from auto completing forms with spam. I've seen that alot of sites use those random images with the alphanumerics on them and then you have to enter the values in the verification box correctly before the page submits.

anybody seen this....? can anybody assist me with this?
would like to add it to an ASP page!

thanks
shoves

 

[Chopstik]

They are called CAPTCHA and you should be able to find some information from Google:

http://www.google.com/search?hl=en&q=captcha

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