Archives for the ‘captcha’ Category


If you’ve read this blog from the beginning you’ll know I like to write CAPTCHAS. The reason being is that it is a technical challenge to write something that a computer has difficulty reading. I think the Codetcha I wrote a while ago was successful in concept because the code errors would be very difficult […]

Codetcha update

I’ve updated the source and it now includes friendly variable/function creation so they are easier to read than pure random data. Thanks to Agente Naranja for the suggestion! I’ve fixed plenty of bugs and included many customisation options, each site using should change the configuration of the CAPTCHA to make it easy or harder to […]


I’ve sat on the concept for a long time and it has had many names but I’ve got a bit of free time now so I decided to create a proof of concept. It isn’t perfect yet and there may be false positives due to a few bugs but if you read my blog you […]

Return of the Heyes Captcha

When I first created my Heyes Captcha I thought I was onto a winner but I must admit it got ripped to pieces by the security community and was hacked in a matter of hours. But I’m persistent so I released another one with a similar outcome 🙂 but now I think I might have […]

Heyes Captcha

I’ve spent a lot of research over the last few weeks trying to create a different type of captcha. The basic idea is to try and produce one without images and try to make it as accessible as possible. I started off with a checkbox idea which allowed you to choose different fruits, this was […]