bart_scriv writes "Businessweek looks at the future of the cell phone, starting with some existing button-free prototypes and moving on to more outlandish and whimsical designs. From the article: 'New technologies drive many of the new designs. One example: Synaptics ClearPad, a new type of touch screen that will become commercially available later this year. Unlike today's touch screens, which aren't entirely transparent and often not very sensitive — we've all had to endlessly tap one with a stylus to get a response — ClearPad is clear, so it can be used as a sensitive overlay to a cell-phone display. Another innovation likely to change the cell-phone's appearance: flexible displays. An electronic ink screen prototype, developed by Koninklijke Philips Electronics and startup E-Ink, is thin and flexible like paper so it can be worn wrapped around a cell phone. Users can unwrap it to view a map on a larger screen. Eventually, the display could be used to watch video.'"