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The source code and documentation for the CloudThink Motion and Context Logger has been released onto the OSADP and is now available for download. To download these applications, you need to sign in as a registered user. To download the CloudThink Motion and Context Logger, please click here. If you do not have an account, you may submit an account registration request by completing the registration form.

The CloudThink Motion and Context Logger captures information from mobile phone sensors to a comma-separated text file for data analysis and motion studies. The application uses mobile phone motion-related sensors to collect and report global positioning system (GPS) and acceleration values over time. The application uses this information to also infer and report out the user’s travel mode at a given time. The mobile phone motion-related sensors include the accelerometer, gyroscope, compass and GPS. Additionally, unlike other sensor-data applications available today, CloudThink's logger captures context data provided by the iPhone 5S's M7 motion coprocessor.

This data is useful for studying what travelers do throughout the day. Additionally, the data collected can be used in further add-on applications that provide more information or services to a potential user. This application allows background data logging and e-mailing of saved events, as well as file transfer protocol (FTP) upload (using the filename "abc.txt"). Please note that files are not persistent, and closing the application will cause all files to be erased from memory. This will be fixed in a later revision.

There are two releases of the Motion and Context Logger, one for iOS and one for Android. This source code is provided "as is" without additional documentation. This application was developed at the Massachusetts Institute of Technology (MIT) under contract with the Volpe Center at the United States Department of Transportation (USDOT) in support of the Intelligent Transportation Systems Joint Program Office. More information on CloudThink, including hardware that supports and extends the Motion and Context Logger can be found here.