Hidden within Nokia's Future Lounge, this very flexible display offers up a glimpse of what sort of thing we could possibly be dealing with when we roll up to Nokia World in 2021. The prototype Nokia Kinetic Device, including its display, can be flexed across both the vertical and horizontal planes -- with bending and twisting motions controlling the interface. If you bend the screen towards yourself, it acts as a selection function, or zooms in on any pictures you're viewing. In music mode, you can navigate, play and pause with the tactile interface. It's still a way off from arriving on phones, though Nokia is aiming to whet developers' appetites with this prototype. We may have seen some twisty interfaces already, but nothing packing a four-inch screen and built-in functionality like this. Nokia couldn't confirm the screen technology being used. Could that be a flexible AMOLED display? See those impressive viewing angles and contortions after the break and judge for yourself.