Hey Brian, this is really neat. I'm curious about the "pre cursor" detection.
I would imagine with the vast amount of information being collected, you will be able to view and analyze data, and as you said, detect if someone may be at risk of falling. Would this ever develop into real time processing, where the app/sensor would be able to warn the user (or a loved one) if they were about to fall? that would be an incredible feature. Life alert is needed for when you fall and can't get up, but this would prevent the fall all together.