Introduction

I got my first portable device when I was a freshman in high school. It was the Palm m100 and I loved it dearly. It didn’t do much, and, well, at 13 or 14 I didn’t have much to use it for. But having a computer in my pocket? Crazy! As a result, it went everywhere with me (and may have gotten taken away once or twice after I used it in class).

Then I moved to the Compaq iPAQ, which ran Windows and had a color screen. Even crazier, I thought. I could run real programs on this. I even asked about campus Wi-Fi when I was visiting colleges in the early 2000s, when it was just becoming popular. I thought of all the amazing things I could do with a tiny computer that came with a pen (stylus) and fit in my pocket. Still, I found myself wanting ...

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