A group from Duke University have unveiled a new app destined for Google Glass called "InSight". InSight is capable of recognizing people without using the normal facial recognition technology, instead it will detect people by learning and identifying the patterns and colors of their clothes.
This means that someone wearing Glass and running InSight could detect friends or co-workers in a crowd of people, without the app having to go crazy with facial recognition, instead just detecting the person through their fashion. The group have pushed out a paper describing how Glass users could use a nametag for each person in a room, or, when names are not suitable, users could tweet for someone else "looking to share a cab."
You can read more on InSight right here.