Can't wait to work some stitched leather into a Google Glass app interface.

"Users navigate through their timeline by swiping backwards and forwards on Glass, revealing cards in the past and future."

Is this some eye-swiping technology? I'm confused by this. I know the Galaxy S4 is coming out with some robust eye tracking technology, built off of the eye tracking already present in the S3 - does anybody know how this works? I'm curious if the eye navigation mechanisms are similar.