Remember the days when PDAs were such a hit with business professionals? Sometimes using handwriting recognition software or a virtual keyboard may seem too tedious in trying to input characters. Eventually we started seeing some nifty looking QWERTY keyboards that either folded out or connect to the device. If you're an iPhone owner and still have difficulty in using the on-screen keyboard, then maybe XSKN's Bluetooth keyboard may be right for you. The Chinese case manufacturer is in the works and showed off a prototype Bluetooth keyboard over the weekend in Berlin. From the looks of it, they kept Apple's unique design elements in crafting the keyboard – boasting some quick-launch shortcuts to some of the most popular applications. It can't go into final production just yet because they are waiting for Bluetooth keyboard drivers from Apple; probably the same reason why we haven't seen any yet for it. Once that's taken care of, we're confident that this will be put into production for many of Apple's devices; including various iPods. So in the mean time, you'll just have to use the on-screen keyboard until this one rolls along.