Wired has an interesting story on Hartmut Esslinger, the founder of Frog Design, Apple's (AAPL) design consultancy. Much of the material comes from Esslinger's new book, Keep It Simple.

So yes, I am referring to content that is referring to other content. But that's okay because it's the ideas that matter. And maybe you don't have time to read the book, or the article.

Let me boil it down for you:

1) The Apple design process was part of human-centic design: Finding more natural ways for people to interact with machines.

2) Esslinger sees a future for flexible hardware, flexible components, and wearable computing. Imagine technology blending more into the human process. This could be an extension of the opint above.

3) It's about getting more personal with our technology. That's obvious. A big part of the success of the iPhone is people feeling like their device is an extension of their personality. Technology will increasingly head in this direction.

4) Wired pegs “smarter software” as one of Esslinger's trends. But that seems too dumb and obvious to me.

5) 3D interfaces. Apple was always good at probing new ways to interact with technology. Imagine taking that to the limits of space and 3D interaction. That will yield some interesting results.

Read the full Wired article here.

Read an excerpt of his book here.