1,487 research outputs found

    Understanding Roles and User Experience of Mobile Technology in Co-located Interaction

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    Over the last few decades, mobile phones have evolved into ubiquitous devices that support remote communication and various kinds of personal activities. Due to their personal nature, device users are engaged in interactions on mobile devices and pay less attention to other people around them. Furthermore, as the user interface is optimized for a single person use, it reduces sharing and interaction capabilities with co-located people, which negatively influences the opportunities for shared experiences and social activities. This thesis attempts to understand how mobile technology can be designed for co-located interaction.Previous literature on the topic indicates that mobile technology is designed and employed in co-located interaction to fulfill one of these objectives - inviting interaction, facilitating interaction, encouraging interaction or enforcing interaction. While mobile technology facilitating interaction is investigated the most, this research further explores the remaining three objectives.This thesis belongs to the research field of Human-Computer Interaction (HCI) and Computer-Supported Cooperative Work (CSCW). This research follows research through design approach, producing the contribution of knowledge through design interventions. This compound thesis includes six studies, introducing seven concepts for mobile application, a novel design for a mobile device, and two functional prototypes. Four studies explore mobile technology ‘inviting interaction’; one study explores the technology aiming to ‘encourage interaction’ and the other study explores the mobile technology ‘enforcing interaction’. The intended contexts of use are for leisure and non-work-related activities, with an emphasis on enhancing the co-located social interaction in the activities.The empirical findings of this thesis include both subjective user experiences and objective observations of users’ interactions engendered by mobile technology as well as reflections on the findings in light of existing literature. Based on these findings, this thesis provides insights about 1) The user experience in respect to mobile technology in different co-located interactions; and 2) The roles that mobile technology can play in co-located social interactions, and the design implications describing properties that influence interaction and collaboration between co-located users. These insights provide understandings about mobile technology for researchers and designers dealing with the colocated interaction domain. In addition, this thesis introduces a model of designing mobile technology for co-located interaction. The model intends to help researchers and designers in their early research and design process of mobile technology for co-located interaction. The model is built upon the relation between design objectives, design perspectives, dealing with limitations of mobile technology and the roles of technology in co-located interaction

    Research for Design of Playful Mobile Services for Social Experiences between Nearby Strangers

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    Having positive interpersonal interactions is a fundamental human need and source of well-being. While fulfilling this need is usually associated with strong ties, research has shown that meaningful social experiences are not limited to those. This research explores the largely untapped social potential of nearby strangers and ways that mobile services can be designed to take advantage of these social opportunities. Play and playfulness appear to be particularly worthwhile ways to achieve this end: play is meaningful in itself (i.e., does not require an external goal) and takes place outside the context of real life. In addition, playful design tends to make digital services more engaging. This research focuses on playfulness as a design quality and explores the social implications of playful mobile services for nearby strangers. This doctoral thesis asks two research questions: What kind of social experiences emerge between nearby strangers from the use of playful mobile services? How can playful mobile services be designed to encourage social experiences between nearby strangers? The research contributes to the field of human-computer interaction and provides insights into mobile service design through six research articles. Two of the studies charted expected experiences with early-stage mobile application concepts for playful interaction between nearby strangers. One of these concepts was further developed into a fully functional mobile application, and a large-scale, in-the-wild study was arranged to explore the actual social experiences it generated. Two of the studies investigated social experiences between nearby strangers in the context of commercial mobile games. The sixth study explored the design space of playful interactions between nearby strangers through co-design workshops. The playful mobile services investigated in this research were found to induce various behaviors that resulted in social experiences between nearby strangers. Examples of such behaviors are the active exploration of the outside world, community building, communicating and collaborating with strangers, and interacting in crowds. I found that playful and social experiences such as competition, surprise, curiosity, inspiration, and benevolence motivated individuals to use these services

    Tagging amongst friends: an exploration of social media exchange on mobile devices

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    Mobile social software tools have great potential in transforming the way users communicate on the move, by augmenting their everyday environment with pertinent information from their online social networks. A fundamental aspect to the success of these tools is in developing an understanding of their emergent real-world use and also the aspirations of users; this thesis focuses on investigating one facet of this: the exchange of social media. To facilitate this investigation, three mobile social tools have been developed for use on locationaware smartphone handsets. The first is an exploratory social game, 'Gophers' that utilises task oriented gameplay, social agents and GSM cell positioning to create an engaging ecosystem in which users create and exchange geotagged social media. Supplementing this is a pair of social awareness and tagging services that integrate with a user's existing online social network; the 'ItchyFeet' service uses GPS positioning to allow the user and their social network peers to collaboratively build a landscape of socially important geotagged locations, which are used as indicators of a user's context on their Facebook profile; likewise 'MobiClouds' revisits this concept by exploring the novel concept of Bluetooth 'people tagging' to facilitate the creation of tags that are more indicative of users' social surroundings. The thesis reports on findings from formal trials of these technologies, using groups of volunteer social network users based around the city of Lincoln, UK, where the incorporation of daily diaries, interviews and automated logging precisely monitored application use. Through analysis of trial data, a guide for designers of future mobile social tools has been devised and the factors that typically influence users when creating tags are identified. The thesis makes a number of further contributions to the area. Firstly, it identifies the natural desire of users to update their status whilst mobile; a practice recently popularised by commercial 'check in' services. It also explores the overarching narratives that developed over time, which formed an integral part of the tagging process and augmented social media with a higher level meaning. Finally, it reveals how social media is affected by the tag positioning method selected and also by personal circumstances, such as the proximity of social peers

    Virtual reality interfaces for seamless interaction with the physical reality

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    In recent years head-mounted displays (HMDs) for virtual reality (VR) have made the transition from research to consumer product, and are increasingly used for productive purposes such as 3D modeling in the automotive industry and teleconferencing. VR allows users to create and experience real-world like models of products; and enables users to have an immersive social interaction with distant colleagues. These solutions are a promising alternative to physical prototypes and meetings, as they require less investment in time and material. VR uses our visual dominance to deliver these experiences, making users believe that they are in another reality. However, while their mind is present in VR their body is in the physical reality. From the user’s perspective, this brings considerable uncertainty to the interaction. Currently, they are forced to take off their HMD in order to, for example, see who is observing them and to understand whether their physical integrity is at risk. This disrupts their interaction in VR, leading to a loss of presence – a main quality measure for the success of VR experiences. In this thesis, I address this uncertainty by developing interfaces that enable users to stay in VR while supporting their awareness of the physical reality. They maintain this awareness without having to take off the headset – which I refer to as seamless interaction with the physical reality. The overarching research vision that guides this thesis is, therefore, to reduce this disconnect between the virtual and physical reality. My research is motivated by a preliminary exploration of user uncertainty towards using VR in co-located, public places. This exploration revealed three main foci: (a) security and privacy, (b) communication with physical collaborators, and (c) managing presence in both the physical and virtual reality. Each theme represents a section in my dissertation, in which I identify central challenges and give directions towards overcoming them as have emerged from the work presented here. First, I investigate security and privacy in co-located situations by revealing to what extent bystanders are able to observe general tasks. In this context, I explicitly investigate the security considerations of authentication mechanisms. I review how existing authentication mechanisms can be transferred to VR and present novel approaches that are more usable and secure than existing solutions from prior work. Second, to support communication between VR users and physical collaborators, I add to the field design implications for VR interactions that enable observers to choose opportune moments to interrupt HMD users. Moreover, I contribute methods for displaying interruptions in VR and discuss their effect on presence and performance. I also found that different virtual presentations of co-located collaborators have an effect on social presence, performance and trust. Third, I close my thesis by investigating methods to manage presence in both the physical and virtual realities. I propose systems and interfaces for transitioning between them that empower users to decide how much they want to be aware of the other reality. Finally, I discuss the opportunity to systematically allocate senses to these two realities: the visual one for VR and the auditory and haptic one for the physical reality. Moreover, I provide specific design guidelines on how to use these findings to alert VR users about physical borders and obstacles.In den letzten Jahren haben Head-Mounted-Displays (HMDs) fĂŒr virtuelle RealitĂ€t (VR) den Übergang von der Forschung zum Konsumprodukt vollzogen und werden zunehmend fĂŒr produktive Zwecke, wie 3D-Modellierung in der Automobilindustrie oder Telekonferenzen, eingesetzt. VR ermöglicht es den Benutzern, schnell und kostengĂŒnstig, Prototypen zu erstellen und erlaubt eine immersive soziale Interaktion mit entfernten Kollegen. VR nutzt unsere visuelle Dominanz, um diese Erfahrungen zu vermitteln und gibt Benutzern das GefĂŒhl sich in einer anderen RealitĂ€t zu befinden. WĂ€hrend der Nutzer jedoch in der virtuellen RealitĂ€t mental prĂ€sent ist, befindet sich der Körper weiterhin in der physischen RealitĂ€t. Aus der Perspektive des Benutzers bringt dies erhebliche Unsicherheit in die Nutzung von HMDs. Aktuell sind Nutzer gezwungen, ihr HMD abzunehmen, um zu sehen, wer sie beobachtet und zu verstehen, ob ihr körperliches Wohlbefinden gefĂ€hrdet ist. Dadurch wird ihre Interaktion in der VR gestört, was zu einem Verlust der PrĂ€senz fĂŒhrt - ein HauptqualitĂ€tsmaß fĂŒr den Erfolg von VR-Erfahrungen. In dieser Arbeit befasse ich mich mit dieser Unsicherheit, indem ich Schnittstellen entwickle, die es den Nutzern ermöglichen, in VR zu bleiben und gleichzeitig unterstĂŒtzen sie die Wahrnehmung fĂŒr die physische RealitĂ€t. Sie behalten diese Wahrnehmung fĂŒr die physische RealitĂ€t bei, ohne das Headset abnehmen zu mĂŒssen - was ich als nahtlose Interaktion mit der physischen RealitĂ€t bezeichne. Daher ist eine ĂŒbergeordenete Vision von meiner Forschung diese Trennung von virtueller und physicher RealitĂ€t zu reduzieren. Meine Forschung basiert auf einer einleitenden Untersuchung, die sich mit der Unsicherheit der Nutzer gegenĂŒber der Verwendung von VR an öffentlichen, geteilten Orten befasst. Im Kontext meiner Arbeit werden RĂ€ume oder FlĂ€chen, die mit anderen ortsgleichen Menschen geteilt werden, als geteilte Orte bezeichnet. Diese Untersuchung ergab drei Hauptschwerpunkte: (1) Sicherheit und PrivatsphĂ€re, (2) Kommunikation mit physischen Kollaborateuren, und (3) Umgang mit der PrĂ€senz, sowohl in der physischen als auch in der virtuellen RealitĂ€t. Jedes Thema stellt einen Fokus in meiner Dissertation dar, in dem ich zentrale Herausforderungen identifiziere und LösungsansĂ€tze vorstelle. Erstens, untersuche ich Sicherheit und PrivatsphĂ€re an öffentlichen, geteilten Orten, indem ich aufdecke, inwieweit Umstehende in der Lage sind, allgemeine Aufgaben zu beobachten. In diesem Zusammenhang untersuche ich explizit die Gestaltung von Authentifizierungsmechanismen. Ich untersuche, wie bestehende Authentifizierungsmechanismen auf VR ĂŒbertragen werden können, und stelle neue AnsĂ€tze vor, die nutzbar und sicher sind. Zweitens, um die Kommunikation zwischen HMD-Nutzern und Umstehenden zu unterstĂŒtzen, erweitere ich das Forschungsfeld um VR-Interaktionen, die es Beobachtern ermöglichen, gĂŒnstige Momente fĂŒr die Unterbrechung von HMD-Nutzern zu wĂ€hlen. DarĂŒber hinaus steuere ich Methoden zur Darstellung von Unterbrechungen in VR bei und diskutiere ihre Auswirkungen auf PrĂ€senz und Leistung von Nutzern. Meine Arbeit brachte auch hervor, dass verschiedene virtuelle PrĂ€sentationen von ortsgleichen Kollaborateuren einen Effekt auf die soziale PrĂ€senz, Leistung und Vertrauen haben. Drittens, schließe ich meine Dissertation mit der Untersuchung von Methoden zur Verwaltung der PrĂ€senz, sowohl in der physischen als auch in der virtuellen RealitĂ€t ab. Ich schlage Systeme und Schnittstellen fĂŒr den Übergang zwischen den RealitĂ€ten vor, die die Benutzer in die Lage versetzen zu entscheiden, inwieweit sie sich der anderen RealitĂ€t bewusst sein wollen. Schließlich diskutiere ich die Möglichkeit, diesen beiden RealitĂ€ten systematisch Sinne zuzuordnen: die visuelle fĂŒr VR und die auditive und haptische fĂŒr die physische RealitĂ€t. DarĂŒber hinaus stelle ich spezifische Design-Richtlinien zur VerfĂŒgung, wie diese Erkenntnisse genutzt werden können, um VR-Anwender auf physische Grenzen und Hindernisse aufmerksam zu machen

    Co-located sharing photo behaviour using camera phones

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    Photo sharing on camera phones is becoming a common way of maintaining closeness and relationships with friends and family and can evoke pleasurable, enjoyable or exciting experiences. People have fun when sharing photos containing amusing scenes or friends being caught doing something ‘naughty’. Recent research has seen an increase in studies that focus on the use of camera phones, remote sharing using online services or sharing in a home environment using different digital technology. However, studies that extend this focus to the equally important issues of how co-located sharing using camera phones occurs and what influences it are less common. In addition, there is a dearth of research that links photo sharing with user experience (e.g. pleasure, fun, excitement collectively called hedonic experience; HE). The experience of photo sharing, however, does not exist in a vacuum but in a dynamic relationship with other people, places and objects and photo sharing is a social experience. This thesis explores the relationship between sharing practices within different groups of people and the various settings where sharing occurs. It investigates the situations when people experience pleasure, excitement or fun during the photo sharing activity. However, to understand the nature of HE using mobile interactive technology (digital cameras, PDAs, mobile phones) and what influences experiences a prerequisite is an investigation of photo sharing experiences using mobile phones. The HCI contributions of this thesis include dentification of different types of HE and their characteristics; provides factors influencing such experience and the vocabulary to help communicating issues related to HE when using technology. In addition, it proposes an empirically based Photo Sharing Components Model that captures the contributors of the photo sharing experience (Value of Photos, Social Affordances, Place Affordances and Technology Affordances) and the photo sharing scenario notations, which account for the different sharing behavioural phenomena occurring between different groups of people (e.g. family, friends, others) in different settings (e.g. private, public, work). Finally, an account of how this model might be developed by further research is detailed

    Gay Data

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    Since its launch in 2009, the geosocial networking service Grindr has become an increasingly mainstream and prominent part of gay culture, both in the United States and globally. Mobile applications like Grindr give users the ability to quickly and easily share information about themselves (in the form of text, numbers, and pictures), and connect with each other in real time on the basis of geographic proximity. I argue that these services constitute an important site for examining how bodies, identities, and communities are translated into data, as well as how data becomes a tool for forming, understanding, and managing personal relationships. Throughout this work, I articulate a model of networked interactivity that conceptualizes self-expression as an act determined by three sometimes overlapping, sometimes conflicting sets of affordances and constraints: (1) technocommercial structures of software and business; (2) cultural and subcultural norms, mores, histories, and standards of acceptable and expected conduct; and (3) sociopolitical tendencies that appear to be (but in fact are not) fixed technocommercial structures. In these discussions, Grindr serves both as a model of processes that apply to social networking more generally, as well as a particular study into how networked interactivity is complicated by the histories and particularities of Western gay culture. Over the course of this dissertation, I suggest ways in which users, policymakers, and developers can productively recognize the liveness, vitality, and durability of personal information in the design, implementation, and use of gay-targeted social networking services. Specifically, I argue that through a focus on (1) open-ended structures of interface design, (2) clear and transparent articulations of service policies, and the rationales behind them, and (3) approaches to user information that promote data sovereignty, designers, developers, and advocates can work to make social networking services, including Grindr, safer and more representative of their users throughout their data’s lifecycle

    Social evolution : opinions and behaviors in face-to-face networks

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    Thesis (Ph. D.)--Massachusetts Institute of Technology, School of Architecture and Planning, Program in Media Arts and Sciences, 2010.Cataloged from PDF version of thesis.Includes bibliographical references (p. 133-143).Exposure to new ideas and opinions, and their diffusion within social networks, are important questions in education, business, and government. However until recently there has been no method to automatically capture fine-grained face-to-face interactions between people, to better model the diffusion process. In this thesis, we describe the use of colocation and communication sensors in 'socially aware' mobile phones to model the spread of opinions and behaviors of 78 residents of an undergraduate residence hall for an entire academic year, based on over 320,000 hours of behavior data. Political scientists (Huckfeldt and Sprague, APSR, 1983) have noted the problem of mutual causation between face-to-face networks and political opinions. During the last three months of the 2008 US presidential campaigns of Barack Obama and John McCain, we find that political discussants have characteristic interaction patterns that can be used to recover the self-reported 'political discussant' ties within the community. Automatically measured mobile phone features allow us to estimate exposure to different types of opinions in this community. We propose a measure of 'dynamic homophily' which reveals surprising short-term, population-wide behavior changes around external political events such as election debates and Election Day. To our knowledge, this is the first time such dynamic homophily effects have been measured. We find that social exposure to peers in the network predicts individual future opinions (R 2 ~ 0.8, p < 0.001). The use of mobile phone based dynamic exposure increases the explained variance for future political opinions by up to 30%. It is well known that face-to-face networks are the main vehicle for airborne contagious diseases (Elliott, Spatial Epidemiology, 2000). However, epidemiologists have not had access to tools to quantitatively measure the likelihood of contagion, as a function of contact/exposure with infected individuals, in realistic scenarios (Musher, NEJM, 2003), since it requires data about both symptoms and social interactions between individuals. We use of co-location and communication sensors to understand the role of face-to-face interactions in the contagion process. We find that there are characteristic changes in behavior when individuals become sick, reflected in features like total communication, temporal structure in communication (e.g., late nights and weekends), interaction diversity, and movement entropy (both within and outside the university). These behavior variations can be used to infer the likelihood of an individual being symptomatic, based on their network interactions alone, without the use of health-reports. We use a recently-developed signal processing approach (Nolte, Nature, 2008) to better understand the temporal information flux between physical symptoms (i.e., common colds, influenza), measured behavior variations and mental health symptoms (i.e., stress and early depression). Longitudinal studies indicate that health-related behaviors from obesity (Christakis and Fowler, 2007) to happiness (Fowler and Christakis, 2008) may spread through social ties. The effects of social networks and social support on physical health are well-documented (Berkman, 1994; Marmot and Wilkinson, 2006). However, these studies do not quantify actual face-to-face interactions that lead to the adoption of health-related behaviors. We study the variations in BMI, weight (in lbs), unhealthy eating habits, diet and exercise, and find that social exposure measured using mobile phones is a better predictor of BMI change over a semester, than self-report data, in stark contrast to previous work. From a smaller pilot study of social exposure in face-to-face networks and the propagation of viral music, we find that phone communication and location features predict the sharing of music between people, and also identify social ties that are 'close friends' or 'casual acquaintances'. These interaction and music sharing features can be used to model latent influences between participants in the music sharing process.by Anmol Madan.Ph.D

    ‘Subtle’ Technology: Design for Facilitating Face-to-Face Interaction for Socially Anxious People

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    PhD thesisShy people have a desire for social interaction but fear being scrutinised and rejected. This conflict results in attention deficits during face-to-face situations. It can cause the social atmosphere to become ‘frozen’ and shy persons to appear reticent. Many of them avoid such challenges, taking up the ‘electronic extroversion’ route and experiencing real-world social isolation. This research is aimed at improving the social skills and experience of shy people. It establishes conceptual frameworks and guidelines for designing computer-mediated tools to amplify shy users’ social cognition while extending conversational resources. Drawing on the theories of Social Objects, ‘natural’ HCI and unobtrusive Ubiquitous Computing, it proposes the Icebreaker Cognitive-Behavioural Model for applying user psychology to the systems’ features and functioning behaviour. Two initial design approaches were developed in forms of Wearable Computer and evaluated in a separate user-centred study. One emphasised the users’ privacy concerns in the form of a direct but covert display of the Vibrosign Armband. Another focused on low-attention demand and low-key interaction preferences – rendered through a peripheral but overt visual display of the Icebreaker T-shirt, triggered by the users’ handshake and disguised in the system’s subtle operation. Quantitative feedback by vibrotactile experts indicated the armband effective in signalling various types of abstract information. However, it added to the mental load and needed a disproportionate of training time. In contrast, qualitative-based feedback from shy users revealed unexpected benefits of the information display made public on the shirt front. It encouraged immediate and fluid interaction by providing a mutual ‘ticket to talk’ and an interpretative gap in the users’ relationship, although the rapid prototype compromised the technology’s subtle characteristics and impeded the users’ social experience. An iterative design extended the Icebreaker approach through a systematic refinement and resulted in the Subtle Design Principle implemented in the Icebreaker Jacket. Its subtle interaction and display modalities were compared to those of a focal-demand social aid, using a mixed-method evaluation. Inferential analysis results indicated the subtle technology more engaging with users’ social aspirations and facilitating a higher degree of unobtrusive experience. Through the Icebreaker model and Subtle Design Principle, together with the exploratory research framework and study outcome, this thesis demonstrates the advantages of using subtle technology to help shy users cope with the challenges of face-to-face interaction and improve their social experience.RCUK under the Digital Economy Doctoral Training scheme, through MAT programme, EPSRC Doctoral Training Centre EP/G03723X/1
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