First one might ask, ‘Why would you do that??’ … but then you watch the video and realize, "Well, why not?!’ http://labs.teehanlax.com/project/digit
The live feedback option using the camera is an amazing feature!
But why, some say, the moon? Why choose this as our goal? And they may well ask why climb the highest mountain? Why, 35 years ago, fly the Atlantic? Why does Rice play Texas? We choose to go to the moon. We choose to go to the moon in this decade and do the other things, not because they are easy, but because they are hard… – JFK
The feedback with the camera reminded me of the flip dot display for Perception that the folks at Breakfast did: http://breakfastny.com/reactive-super-speed-electromagnet-dot-display-per/
Almost all of us here work with LEDs (only), and we’re used to seeing LED dot matrices and other types of displays and we like to study them too, like at Apple stores. 
But when I see something like this, it makes me sit back and think: what you can do with an LED can, in some way, shape, or form, also be accomplished in a whole different way with some amazing results.
That dot screen is phenomenal!
I’ve been wanting to get one just to play with. Those suckers aren’t cheap …
That’s an awesome look