Motion-sensitive Handhelds?
An anonymous reader writes "Fancy controlling your mobile phone just by moving it? This article on ZDNet describes a new smartphone that is motion sensitive, so users can zoom into a Web page, scroll round a document or switch from portrait view to landscape simply by tilting the handset." The company website has a little more information.
Motion sensitive computing input devices of any kind make for some awesome gaming potential.
In this case, you could have a wicked game of labyrinth running on your PDA!