Fabian Hemmert [fabianhemmert.com] tries to solve the question "How to Make Digital Content Graspable?" in a quite original way. In his short TEDx talk, and the according movie which you can watch below, you can check out his innovative inventions to depict and interface with data on a mobile phone through three different ways.
The weight-shifting method allows a phone to communicate to users where to walk by dynamically changing its gravitational center along two axes. The shape-changing method is able to convey where more information is located outside of the screen by changing the thickness of a phone at its corners. And lastly, the 'living' method allows a mobile phone to display emotional states due to a continuous heartbeat and breathing-like motion that can be felt ambiently in your trouser pocket.