Microsoft develops shape-shifting touchscreen:
microsoft filed a patent application covering a novel way to construct a "tactile" touchscreen – a display that uses technical tricks to convince users they are actually touching the ridges, bumps and textures of a displayed image.
It's amazing the speed with which technological advances occur in the fiels of mobile telephony. I do not know if the inventions may become useful or not. What is clear is that we are approaching a world close to science fiction.