I see flexible e-paper being used in signage applications (in-store retail window displays, trade shows, etc.). Stores want the flexibility to rearrange their merchandise and sign layout, but need the convenience of updating their signs instantly to reflect new prices, sales, and so on.
For personal book/media readers, a robust, rigid device makes the most sense.
Hmmm, flexible e-paper... digital window shades? Don't like looking out your window at your neighbor's back yard? Roll down your shade, and hit the "beach" button.
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