As sensors in mobile devices become increasingly pervasive, leveraging rich data in meaningful ways is an exciting space with many potential opportunities. However, many challenges associated with Personal Data Informatics (PDI) are often overlooked. Centaurus was a prototype for a platform that enabled building, distributing, and running personal data campaigns on users’ mobile devices. One key feature of Centaurus is on-device data processing, which is designed to minimize data transfer and mitigate user’s privacy concerns.
Privacy and clarity were two core requirements for Centaurus, enabling users to understand what types of information are being collected, how frequently, and giving them fine grained control over the types of information they are willing to share. As a design exercise, I focused on clearly conveying information to the users about the sensors being polled, how the clients are using that information, and what information was leaving the device.