Barnes & Noble introduced a new color version of its Nook eBook reader on Tuesday and as expected, it features a color touch screen. Unfortunately for B&N, this new device is unlikely to pose a significant challenge to either Apple's iPad or Amazon's Kindle.
The big advantage that both the Kindle and the original Nook had was a monochrome e-ink display which uses very little energy and generally provides excellent readability. The iPad on the other hand needs to be charged daily but its color LCD provides plenty of capability for dis
