Folding technology is long-promised but slow to arrive. This kind of tri-fold hardware, though, might just be the how the sci-fi dream pans out over the next few years.
This prototype is put together by the Human Media Lab at Canada's Queen's University. It's a fully functional smartphone that uses three separate e-ink screens which snap together.
It's a clever idea, and seems particularly great for navigation (hey it feels a bit like a paper map to begin with, so that may be no surprise). In the example, the team behind it show it being used for displaying driving directions over all of the screens, or folding the displays together to create a kind of Google Earth globe.