Synaptics demonstrated at this year’s Mobile World Congress 2010 their new multiple touch interface technology. Though still just a concept, they had a prototype of the Fuse. The phone itself has got not only just a touchscreen, but additionally squeezable touch sensors on its sides and also touch sensors on the back!

This means you could literally navigate the menu by using the back side of the phone as an extra touch screen, check out the video below, it does appear a bit creepy to see the screen move without anyone actually touching its front panel.