First draft of the introduction

Rewrote the introduction as a usecase.

Pulled the introduction into a separate file.

This is a first draft but thought I'd get out a general idea of the introduction I had out as soon as possible.
Again the sentence split that I don't like :)
"After handing over the phone, the owner of the smartphone has very little control over what is done and how it gets used, aside from physically intervening in the handling of the smartphone or relying on social norms."