We recently came across this Twitter Feed augmented reality T-shirt experiment on PSFK.
It's an interesting idea, based on the concept that if your information is being broadcast to everyone, you should at least control the content to the best of your ability.
Printed on the front of the shirt is a kind of bar-code that contains your Twitter user name. When an appropriate sensing device (phone, laptop) is pointed at it, your latest Twitter update will virtually appear. Watch this concept technology in action in the video below.
With this new t-shirt you can become a walking beacon for whatever you twit about. No longer just for your internet buddies, the shirt lets your thoughts pop out into the real world.