I want something like this but just to hang on the wall to display graphs. Why are e-ink displays only ever focused on ebooks, I think there are lots of cool non-ebook applications for this technology but to use it you either have to build something with a soldering iron and a raspberry pi or hack an ebook's OS. I don't understand why there aren't more special purpose e-ink devices for other uses like monitoring, price displays & restaurant menus, etc.