The location it chose was laughably inaccurate (and since I'm the kind of person who posts here I know why). Censoring the IP address was a little cheesy, but down at the bottom it gets better.

It knew how much my phone was charged and it made correct inferences about my device. It accurately read my gyroscope, how I interacted with the touch screen, and it demonstrated (not new knowledge to me but probably interesting to the general public) how these things could be used to identify you and also to make inferences about you (if you are sitting, standing, lying down, etc).

It starts slow but it got interesting.