As the Platform matures, so are applications. More and more applications are providing robust functionality that need the same security features as sites on the open web.

While Facebook is working on a secure payments solution for application developers wanting to accept payments but unable to setup a payments infrastructure themselves (and not wanting to use Paypal), Facebook has released one security feature that developers can use today: CAPTCHAs.

CAPTCHAs keep bots from filling out web forms. As Facebook’s Justin Mitchell writes,

Over the last three years, we have developed many tools to stop this type of activity and protect users’ private data. One of the most powerful tools in our arsenal is the CAPTCHA, a simple image that displays obfuscated text that computers cannot read but humans can.

Now that Facebook Platform applications have become incredibly popular, we’re rolling out tools that make it as easy and efficient as possible for third party developers to secure their applications. As part of this effort, we are introducing a new FBML tag to easily drop a CAPTCHA onto a canvas page.

We’ll let you know of all the new security features Facebook is making available to app developers.