Why should we nuke the spammers

in

....because one day, this kind of CAPTCHAS is going to be every where.
Examples of animated captcha:

Examples of math captcha:
Crazy Math Captcha

\sum _{n=0}^{\infty} \frac{(\int _{-\infty}^{\infty}\exp(-a^2)da)^2 \oint \frac{dz}{z}}{4{\prod_{k=1}^\infty(\frac{n+1}{n})^{(-1)}^{n-1}} n!} = i\sum _{n=0}^{\infty} \frac{(-1)^n x^{2n+1}}{(2n+1)!} + \sum _{n=0}^{\infty} \frac{(-1)^n x^{2n}}{(2n)!}

Examples of logic captcha:
The smallest positive integer not definable in under eleven words:


I wet my pants

Visitor Ping Hacks's picture

"solve for x", that was the funniest thing i have seen on the internet all week, thanks!

Glad you liked it :) Some

Mgccl's picture

Glad you liked it :)
Some spammers hires people for like 10 dollar a hour to break into easy CAPTCHAs, like the math one I got on this website.

whats the web site?

whats the web site?

math captcha

Dane's picture

I've been all over the web trying to find a randomly generated math captcha (or just math) for verifying a simple contact form. Lots of 'close-but-no-cigars'. One of the links Googled led me here.

Any possibility of getting the source for your form and math?

gdane

It's a joke... there is no

Mgccl's picture

It's a joke... there is no math CAPTCHA that hard. but there is very challenging math captcha out there. hope you find that fun.
Most college professors would need at least an hour to solve math CAPTCHAs like mine, unless they just cheat by using computer to calculate the approximation and take a good guess.

Post new comment

The content of this field is kept private and will not be shown publicly.
If you have a Gravatar account, used to display your avatar.
  • Allowed HTML tags: <img> <a> <em> <strong> <cite> <code> <ul> <ol> <li> <dl> <dt> <dd> <span> <fn>
  • Lines and paragraphs break automatically.
  • Textual smileys will be replaced with graphical ones.
  • You can enable syntax highlighting of source code with the following tags: <code>, <blockcode>. Beside the tag style "<foo>" it is also possible to use "[foo]".
  • Use [fn]...[/fn] (or <fn>...</fn>) to insert automatically numbered footnotes.

More information about formatting options

What is 39 + 0?
To combat spam, please solve the math question above.
Honey Pot that kill bots