I'm handicapped and have to use crutches and a wheelchair to get around. I primarily use the crutches as I still like to try and visit parks and sites that make using a wheelchair cumbersome. I.E. geocaching, camping and such.
I use my android phone, (same kind apparently that you use Ben,) for directions and to prevent me from getting lost.
This brings me to the question.
I'm wondering if you can come up with a display that could be clipped on to a baseball cap or hat that would be able to connect to a smart phone, (iphone, blackberry, or my favorite android,) to give real time information. The connection should be wireless/blue-tooth enable but even a wired connection would be fine as I usually wear a backpack when going places.