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I think that's exactly why he used it there. This device could be amazing for blind people if it has accessibility features built-in (like the voice controlling part).

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An ear piece would suffice for the blind, unless they need to use the nose bridge as a stand.

That's true but the advantage with a generic device is that, same applications can be used by both normal and blind people with a (hope fully) little tweaking on the app's part. For example, if it is a route finding app, a tweak to provide more frequent and detailed audio when set in disabled/blind mode will make it compatible for a larger user base.

If they release some device only for the blind , then you will have to find developers who are willing to develop to a niche market.

You mean like the Opti Grab? We learned a lot about blindness from having guardianship of our blind teenage nephew for a year. True, the ear piece would be the big benefit for him (though one eye was very slightly sensitive to light). Others at his school had varying degrees of low vision and might at least benefit from bright flashes of light. But the big gain would be something that describes his environment out loud. Blind people do still aim their faces toward things. And it's much better than a similar capability in a handheld device such as the iPhone or iPod Touch, because for the blind, orienting a handheld device correctly can be a major problem. We turned on the accessibility features for our nephew's iPod, but the thing would switch from landscape to portrait as he turned his hand slightly. Head-mounted is the way to go. And for the sighted, it will be great for games, as I found out from the prototype glasses I got: http://youtu.be/lQGpOibUsyo

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