Technology to Watch - Electronic Paper!
Basically, you "load" the image to the paper, then disconnect it from power, and the image remains, without any electricity required. If you want to change the image, just load a different one.
Here's an excerpt from their press release:
Electronic paper offers all of the same characteristics of paper such as being thin, flexible, and lightweight. It also boasts low power consumption in that it does not require electricity except during screen image changes, making electronic paper especially suited for advertisements or information bulletins in public places for which paper is currently used. Electronic paper is especially convenient for use on curved surfaces, such as columns. In addition, electronic paper can be conveniently used in conjunction with mobile devices as an easy-to-read and portable display device.
The new electronic paper features vivid color images that are unaffected even when the screen is bent, and features an image memory function that enables continuous display of the same image without the need for electricity.
The entire press release is here.
Hat tip to Slashdot for the story.