A Study of a Life Logging Smartphone App and Its Power Consumption Observation in Location-Based Service Scenario

AN Trip system is a location-based way for recording travels, sharing sensations, and deepening life experiences. Various researches and products have been proposed to create location-based services and crowd sourcing activities and to explore the power of geographical knowledge and human computation. We devised AN Trip to assist users in managing trajectory-based travel information. The incentive for participation is a big challenge for such types of application. To improve user experience and system usability, we held three promotion activities to spread and refine this urban computing service. Furthermore, for such a kind of all-day-long location recording services, power usage turns into the decisive factor of whether an app can survive in users' smartphones. We planned a series of experiments to observe the power consumption of existing positioning techniques in AN Trip usage. Finally, the service challenges, activity observations, and experiment discoveries were organized to consolidate our experiences with location-based services and urban computing development.