It's only natural that other companies are going to start copying the iPhone, it's the natural direction for things to go, although it's more natural for some companies to copy than others...
Motion sensor based on a camera?! What are they thinking? That's gonna drain the battery down pretty quickly, plus it won't work in dark places (unless they put a really, really, really high quality camera in it).
Fail, that isn't going to work in real life.