CAPTCHA4U - Automated CAPTCHA Bypass

Submitted by admin on Mon, 07/23/2007 - 22:57.
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CAPTCHA4U is 100% focused on increasing accessibility on the Internet. There are over 1 Million Americans that suffer from blindness. CAPTCHA4U can be used to automatically translate an image into the underlying text. (CAPTCHA4U may only be used in accordance with the Terms Of Service of each website* - please read the agreements.)

  • What's a CAPTCHA? - Its a funny, blurry, textual image that prevents robots from automating the web. Blind people can't see the image, and can't use the website!
  • What does a CAPTCHA look like? - Pretty damn funky. I can barely understand what they say.
    Here's one, I think it says "tudexpa"

  • Won't spammers use this? - They wish! We don't do busines with spammers. We can detect and delete spammers from the system.
  • How will you help the blind? - We are integrating with screen reader software now. Please encourage your vendor to talk to us.

* We have been notified that using CAPTCHA4U with Myspace is against their Terms of Service.

API Documentation

Submitted by admin on Fri, 07/13/2007 - 17:39.
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We have a RESTful implementation of our service at http://www.captcha4u.com/api.aspx
Your API key can be found on this page.

The API has 2 simple HTTP POST operations.

  • upload_captcha
  • get_result
  • rate_result

upload_captcha
You must POST with "Content-Type: multipart/form-data".
There are 5 required parameters:

  • method - upload_captcha
  • api_key - string representing the API key
  • file - transmit the CAPTCHA image
  • expire - number of seconds after which CAPTCHA has expired (usually 60 or 300)
  • rights - true or false

Possible results:

  • FAILURE: access denied - get API key from website
  • FAILURE: file_size=0
  • SUCCESS: captcha_id=<string GUID>

get_result
You must POST.
There are 3 required parameters:

  • method - get_result
  • api_key - string representing the API key
  • captcha_id - returned from upload_captcha

Possible results:

  • FAILURE: access denied - get API key from website
  • FAILURE: captcha_id not found
  • FAILURE: expired
  • WAIT: check back later
  • SUCCESS: captcha_result=<textual representation of CAPTCHA>

rate_result
You must POST.
There are 3 required parameters:

  • method - rate_result
  • api_key - string representing the API key
  • captcha_id - returned from upload_captcha
  • success - 1 if captcha was correct, 0 if captcha was not correct

Possible results:

  • FAILURE: access denied - get API key from website
  • FAILURE: captcha_id not found
  • SUCCESS: thanks