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E-ink is not practical either. The power needs to be boosted to ~100v (power hungry), each key would need a separate screen, and would have to be manufactured to be tiny. E-ink alone is expensive, probably even more so than OLED, much less color e-ink! Which is still in prototypes for many companies. Color e-ink will not hit mainstream consumers for a good 5 years.

Either way, you are looking at huge manufacturing costs, poor durability, and sucky key quality.

Oh, and future kindle? Uses a light buide printed on top of the screen. To do this with keys, the LEDs will have to be on top of the keys, which again makes backlighting very difficult.
 
I believe with the price theyre selling, you can buy a low end 11" MBA

They aren't actually selling them. That was just a prototype. Then again, the consoles it is meant to run start at $4,500, and end upwards of $45.000.
 
Wouldn't it be much easier to get keyboard covers with the letters on top. Just rip em off and put a different one on straightaway.
 
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