I'm planning to write a lengthy cross-post for here and BTD about the Awesome Display Technologies of the Future, since I've been reading up on it recently. But since I'm still working evenings, I have no idea when I'll get a chance to write it. So for now: wonder at the mystery of electronic paper!

It's being used by Bridgestone as part of an automated pricing system -- you can read a little about it here.

None of the various competing electronic paper technologies are going to be in your next TV -- the response time is generally way too slow for effectively conveying motion. But the benefit to this tech is that you don't have to apply power to preserve the image, so if it can be made cheap enough you could build dynamic displays without worrying about where to plug them in.

It's fun to imagine the possible applications. Advertisements are an obvious one -- but so are, say, restaurant menus that automatically display the day's specials and the market price for fish. Or labels on keyboards that remap themselves to whatever application you're using. Or (if it gets good enough) electronic picture frames that actually make sense to own.