The problem with reading devices like the Amazon Kindle is that they can’t fit in your pocket. Polymer Vision announced that it has officially began mass production of the Readius. This electronic-document reader can unroll its display to a scale larger than the device itself. Featuring four gray levels, the monochrome, 5-inch QVGA (320 pixels x 240 pixels) display provides paper-like viewing comfort with a high contrast ratio for reading-intensive applications. Video of rollable display prototype after the break. Click here for first picture in gallery.