Various embodiments concern obtaining mobile device data and generating activity logs. More specifically, mobile device data such as data indicating the location and time of a mobile device is obtained. The time and location may be automatically obtained and recorded using location service APIs on the mobile device. The obtained data is then used to generate a report including the time, duration, and location of activities associated with the user of the mobile device. Thus, an activity log is automatically generated using the time and location data.
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