In conclusion, position from accelerometers is just really, really hard. We would not say it is impossible. Given enough time and resources, we are confident we can solve the problem, but that would require a lot of time and resources that we just did not have for our project. Even Samsung failed in making a keyboard based on accelerometers. They have been trying for nearly 4 years, but have not made anything that can be commercialized yet. So we don't feel too bad that we couldn't get it to work in a month.