I listen to podcasts. I find it very valuable. I have a twiddler. I'd prefer to not use it when walking, although I prefer a normal keyboard when sitting in fr

I listen to podcasts. I find it very valuable. I have a twiddler. I'd prefer to not use it when walking, although I prefer a normal keyboard when sitting in front of a computer. I think that the best interface for working when walking would be speech recognition/spoken word. If I had a screen in my glasses I'd probably walk right into a tree. Perhaps you could dictate to some kind of voice recognition on a mobile phone?