Wearable LEDs (and Google Glass)
"Often when I write about wearable LEDs, I’m doing so in my Lighten Up blog in EDN’s LED Zone, extolling the virtues of slippers, belts, earrings, and other bizarre LED-lit merchandise that you might buy for a geek-type at the holidays. Fortunately, I’ve found some recent intros into wearable LEDs that are much more worthwhile and show an interesting future. While it’s true that they are not ready for prime time, they at least make sense.
For example, take the battery-powered backpack with a set of microcontrollers from the Arduino platform and mounted LEDs that blink for 20 seconds in the shape of arrows. Potentially worn by motorcyclists and bike riders, the user can initiate the arrows with a mere turn of the head in the appropriate direction to flip switches on and off with their chin."
Whole article from Carolyn Mathas here:
http://www.edn.com/electronics-blogs/led-zone/4419147/Wearable-LEDs---Apps-with-promise