ContextLogger 2 A Tool for Smartphone Data Gathering

Researchers often want to gather activity-related data available on mobile phones. Based on our experience with data collection in numerous field studies, we identified a number of requirements for a smartphone data logger, and set out to create logging software fulfilling those requirements. Our software—named ContextLogger2— now comes close to meeting the goals set for it. Furthermore, it has portable technologies in its core, potentially serving as a basis for logger implementations for a variety of platforms.