The idea of navigating a webpage with Glass seems like it could introduce some challenges, but Google seems to have worked out a decent control scheme. Scrolling is accomplished by sliding your finger forward on the touchpad to scroll down. You can also zoom in (or out) on a page’s content by sliding two fingers forward or backward. But what about just looking at the website? Google has pulled off a neat trick here. With two fingers placed on the touchpad, you simply move your head around to pan.