The software represents each e-text with its own spine. These specifications can code e-texts by topic or be color coordinated with the room's decor. Once the virtual bookshelf is created it is displayed on a blank wall. E Ink now manufactures digital ink for signs, but more elaborate devices are being planned, including an e-book with pages. However, the following use is for displaying a virtual bookshelf on a wall.
Digital ink is sprayed on the blank wall for displaying the virtual bookshelf.
The virtual bookshelf is loaded into the digital ink. Digital ink displays the virtual bookshelf on the wall with no additional electricity until the bookshelf is changed and reloaded into the digital ink on the wall. At this time, the digital ink's display is controlled with a pager, hand-held control or corporate network . Imagine sitting in the bathtub and selecting an e-text from your virtual bookshelf and display it on the wall above your feet. The hand-held controller would also turn pages, change font size, etc.