Polymer Vision and Telecom Italia have announced plans to introduce the confusingly-named “Cellular-Book,” which—thought not offering phone features—will be the first device to feature a rollable display on personal portable device intended for digital content distribution. Unfurled, the rollable display measures five inches across and, the company claims, is as readable as a printed page in broad daylight. The display uses an electronic ink technology (apparently from E-Ink) on a flexible plastic substrate