Which I see as problematic. I think one would have to unplug the eInk cover in order to use the USB port on the phone. That would be a PITA. I still say that metal case front will cause scratches no matter what crap is sprayed on to prevent it. And finally the case hinge is a cheap flap of thin material that will wear out quickly and doesn't allow the eInk cover to lie flat against the phone when the cover is open. This idea is probably a good one, I like the concept, but this particular prototype is far from desirable.