This technology could have some interesting applications. If you mounted a GPS locator on the person and used the OLED and a button to select items of interest, say birds or other animals, you could automatically record where you saw them and calculate thier positions given your relative orientation.
This would be very useful after an event to go through an area and quickly capture the damage and indicate areas where search and rescue needed to concentrate first. If you tied this device into the face tracking software, you could dynamically cue the video surveillence system to track people of interest. I could see this type of system used at cassino's, where they need to quickly spot and track people acting suspiciously.
Hmmm, very interesting possibilities.