Once you login with your Twitter account you will need to simply scan the floor for AR and once the AR is ready - you will see your Twitter feed appear right in front of you. You can do everything you do in Twitter (retweet, favorite, comment, etc.) as you would in regular Twitter.
This is a fun way to show Augmented Reality (AR) to people as it has that WOW factor as well as a familiarity. It isn't an app that one would use everyday, but it is one that will grab other's attention.
Embedded below is a 1 minute and 44 second YouTube tutorial.