University of Twente Student Theses


Picalilly: sharing photos through locative social media

Keijl, Edwin (2013) Picalilly: sharing photos through locative social media.

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Abstract:In this thesis, we present research on locative media. Locative media systems are systems that use automatic reports of the user's geographical location for goals such as wayfinding, augmented reality, creation and sharing of geo-tagged data. For this research, we focus on the last two of these categories. Many different aspects are discussed, from the design to the evaluation of locative media systems. Two prototypes of a location-based mobile photo sharing application called Picalilly were designed, implemented and evaluated to investigate the in uences of locative media on the way people share information with each other. The design rationales of the two prototypes of Picalilly are explained and choices for functionality and layout are clarified. This way it is shown how Picalilly evolved over time. Then we explain the choices made for the research methods that were used during the evaluation of Picalilly. We preferred a longitudinal field study over lab research, in order to fully capture the user experience and give the users enough time to grasp the possibilities of location-based sharing. Interviews and questionnaires are the main types of methods used for gathering data during the evaluation of Picalilly. The AttrakDiff and UTAUT questionnaires are used to capture data about the user experience, usability and acceptance of Picalilly. We found that the opinions regarding the usefulness of location-based sharing were divided. It was examined that when users are sharing information with a group of close friends, the location does not add much value to the overall experience. Information about the location of a photo becomes more interesting when context information is lacking. Location-based groups are most useful when available context information about the location or topic of the group is scarce. It can help users filter out relevant content based on time and their location. Furthermore, we have seen that locative media can stimulate the user to explore his surroundings, either through the application or it could motivate him to visit a particular location in the physical world. Participants of the user studies reported that they deemed Picalilly most useful in the context of events, such as festivals and small scale communities. It was observed that users wanted control over their privacy, regarding the locational information they share. Users enjoyed using Picalilly for the exploration aspect and for sharing with their close friends.
Item Type:Essay (Master)
Faculty:EEMCS: Electrical Engineering, Mathematics and Computer Science
Subject:54 computer science
Programme:Interaction Technology MSc (60030)
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