using PIL for anti-automation in ASP

[John J. Lee]

dougrams at comcast.net (Doug R) writes:

> I'm trying to create an anti-automation feature to prevent scripts
> from running reports on our website by requiring users to enter a code
> from an image (like Yahoo e-mail sign-up, or Network Solutions WHOIS
> search).
[...]

It's called a captcha.

http://www.captcha.net/


You might like to note that the site above lists several programs that
can crack the kind of captcha you're talking about with around 80-90%
accuracy.  So, if you've got determined attackers, you might prefer
one of the other schemes they suggest.


John