I agree with this. You should look into integrating something like http://pocketstrafe.com/ : they have made it possible with a phone with a gyroscope for running in place: which of course also works on a treadmill.
I agree with this. You should look into integrating something like http://pocketstrafe.com/ : they have made it possible with a phone with a gyroscope for running in place: which of course also works on a treadmill.