iPhone Gyroscope.

Has anyone come across any websites that utilise the iPhone's gyroscope? Similar to the wallpapers on iOS7?

I know there are websites like http://360.io/pt3dmqna for example that use the iPhone gyroscope to view 360 panorama photos

But what if I wanted the text on a website to slightly tilt with the phone?

 

You can use javascript for your purpose, with event listeners and getting the position from the device:

​

window.addEventListener("deviceorientation", function () {
        tilt([event.beta, event.gamma]);
    }, true);

Code (markup):

​

 

It's completely foreign to me, is there a help/learning doc?