OK. Amazon is getting a splash of press this morning with their $200USD Kindle Fire tablet (KFt). Thinking about portable machines, or at least devices with multiple uses, I'm seeing how pairing these two together could work. First world school kids could potentially carry their books on the KFt, plus watch or listen to all the stuff they do anyway.
So with a battery powered R-Pi, and using a KFt for display and user input, aka UX (User eXperence), how do we get the two devices to talk?
First way might be just a USB WiFi modem on the R-Pi's only USBport. Plus special hosting application so the R-Pi & KFt will bind together without needing additional hardware platforms. This could be done with COTS hardware, and two apps. Down side is not using the R-Pi's video options. Oh wait! The R-Pi just became a Dual-Display, or is it Tri-Display system, depending upon what is connected. Oh, this is getting better than I first thought.
Or make a USB cable that looks like a snake that ate a rat. Where the swallowed rat is an embedded uP to handle linking the two devices together for point-to-point communications. Maybe this cable is already out there?
Just first thoughts on the matter. Software is always free right, it is hardware that costs money.