ReCaptcha
This allows you to add a ReCaptcha to your form to further protect your site from spam and abuse. A if you have a rate limiting captcha enabled in your Payment Form Settings then a captcha will trigger on the form when a threshold is met, but the ReCaptcha allows you to verify that a human is entering the form information every time the form is submitted.
To add the ReCaptcha to your form, follow the simple steps below.
HTML
First, locate the code below.
<tr>
<td bgcolor="#F0F0F0" width="692" colspan="2">
<p align="center">
<input type="submit" name="submitbutton" value="Process Payment >>"></p>
<hr>
</td>
</tr>
<tr>
<td bgcolor="#FFFFFF" width="692" colspan="2">
<div align="center">
<table border="0" cellspacing="1" width="100%">
<tr>
<td>
</td>
<td width="84">
<p align="right">
<img border="0" src="/images/padonly.gif" width="84" height="96" align="absmiddle"></td>
</tr>
</table>
</div>
</td>
</tr>
</table>
</div>
Delete that code and replace it with the code below:
<tr>
<td>
<div class="panel panel-default">
<div class="panel-body">
[ReCaptcha]
</div>
</div>
</td>
</tr>
<tr>
<td bgcolor="#F0F0F0" width="692" colspan="2">
<p align="center">
<input type="submit" name="submitbutton" value="Process Payment >>"></p>
<hr>
</td>
</tr>
<tr>
<td bgcolor="#FFFFFF" width="692" colspan="2">
<div align="center">
<table border="0" cellspacing="1" width="100%">
</table>
</div>
</td>
</tr>
</table>
</div>
This will show the ReCaptcha and require the user to verify themselves before processing the form.
User Experience
Below you will see the differences in user flow when using the captcha vs. the recaptcha.