Restrict usage of webmethods outside the domain
<p>I'm writing a webmethod that will be used on reg form and will check if email address exist in the system. </p>

<p>The method will be called using jquery ajax.</p>

<p>Question is how can I restrict the usage of the webmethod only within my website, so it won't be abused in any other place like local machine running some loop that would load on my server.</p>

<p>I know there is something similar exist for not letting usage of images outside the domain, but have no clue how can it be done for webmethods?</p>

<p>Thanks.</p>
