There will always be a place for books that are mostly just words and are well-rendered on paper or an e-ink device.

FORBES: Amazon Unveils the Future of E-Reading -- And It's Not the Latest Kindle

As well as being used for in-store signage, E Ink's technology powers Sony's e-book reader, and in April, Seiko, a watchmaker, unveiled a digital watch built around an E Ink display.

ECONOMIST: REPORTS