The company E Ink, the inventor of the eponymous technology screens for e-readers

company E Ink, the inventor of the eponymous technology screens for e-readers, in partnership with an unnamed manufacturer gadget is working on a smart phone with two screens. One screen, the usual color touchscreen on the front panel, and a flexible E Ink will be built into the rear panel. Display with "electronic ink" is much more economical, and read from it is much more convenient. Such a screen energy needs only to update the image. Even if the battery is completely discharged, then it will be the last loaded image. For example, a ticket number or map of your surroundings that can save at a critical moment.