Slide to Unlock

Hi
I just installed a new copy of wordpress on a new domain. I was wondering if there’s a theme or plugin that adds a “slide to unlock” thing on the bottom of the page (like seen on the iPhone) in my post and then redirects that person to another page / post or external link (after he slides his finger) (it’s like a “click here link” just replaced woth “slide to unlock” like on the iPhone..)

Is there a plugin that coukd do this?