You can let your software call this API before (or after) captcha is decoded by any decoding service. I will make statistics page for this API so you can see all the collected data. With such data, you will know custmer better and we can both promote our service to your customers better.
To be simple, you can use GET, instead of POST if you want.
<!-- Action target --> <form action="http://bypasscaptcha.com/vendor_record_dec.php" method="post"> <!-- Vendor key --> <input type="text" name="vendor"> <!-- Domain of the captcha decoding service, e.g. bypasscaptcha.com --> <input type="text" name="type"> <input type="submit" value="Submit"> </form>