Motion Pattern from Camera Detector for iOS
What it is
This is basically a proto-typing project. The camera of your iPhone can tell how the iPhone itself is moving by analysing the video taken.
How to use this
Compile and install it, tap "start" button, move your iPhone to the up you can see a blue arrow appear. That's it…
How it looks like
Main credits go to TinyMotion project, you can learn the algorithm from their paper and their open-source code.