Interesting idea. That being said, sounds like a great way to destroy your iPhone, even at 5.56.

Novell idea but I don't think you can actually use it as a site (I think you still need to use a scope or the built in sites) but in long range shooting have wind information could be useful. If you can see the screen in daylight...

One thing that immediately occurs to me is it could be linked to other phones in a hunting party, share gps coordinates, and flash red if your point of aim is too close to other people.

@Bob - Now you've got me thinking of bringing google glass on my next hunting trip

The first thing i thought of when i saw this was MilSim PaintBall Guns, I would love to stick this on a Tippmann Tipx to peak around corners.

This would be ideal for an air rifle, where accuracy is far more important than muzzle energy. I wonder if it would be legal in 10 meter Olympic style competition?

Can this work for Galaxy phones??

Another device to automate and take the fun out of hunting.

And as a added bonus it lights up the user, making them easy pickins for the enemy. like the third guy to use the match.

No information of how or if you can zero it. Pretty pointless otherwise.
Also, it's the optics that make a sight effective. Smart phones don't have that. I'm pretty sure I can tell what the wind is doing if the target is 10m away.
It's a gimmick.