Currently I’m wondering if there is a way to post to a website using captcha for a human-check. The following question is asked, ofcourse this is done with random numbers:
Type this number in digits; 'twohundredandfive': [ input ]
The form is sent using AJAX. So when reloading the website the number to be typed changes.
A way to get pass this is reading and converting the number, then post some data, but at the second request the number already has been changed (which is good). But IS there a way to avoid this?
Don’t think I’m using this for bad intensions, the described form is used in one of my applications. It is just a check to get sure bots can’t get pass.
Thanks so far 🙂
A CAPTCHA should test whether the entity solving it is human. To my eyes, the problem you are setting looks like it would be fairly trivial to solve algorithmically.
Given that a human can pass the test, then it’s certainly possible to write an automated bot which will pass it too. As to whether there is a “back door” which allows access without solving the CAPTCHA, only you can decide that by analysing your source code.