When you think about the basic logic behind Apple's Magic TrackPad, you could reasonably envision touch controls going well beyond glass. This only makes sense as Apple gains experience with touch technologies on different substrates. In a second patent application published today, Apple discusses a new way of bringing touch to aluminum and other metals. There, new discoveries may very well lead to the development of truly next-generational forms of a MacBook or perhaps just added magic to their MacBook Air. Considering that Apple also discusses introducing air-wave controls on Apple hardware, it might be the place to kick-start this little wonder of an idea. The Concept also extends to the iPod where we might even see a spiral-styled control UI surface amongst a series of new specialized hardware interfaces. While I think that Apple's new reconfigurable hardware concept sounds a little like their one time chameleon project, the fact remains that Apple now has the technological experience behind them to advance some of these great and wilder ideas. I think that Apple's TrackPad was only an experiment for what lies ahead. And it all sounds like a lot of fun to me.