Demand Around the Clock: Time Use and Data Demand of Mobile Devices in Everyday Life

Motivated by mobile devices' growing demand for connectivity, and concern in HCI with the energy intensity and sustainability of networked services, in this paper we reveal the impact of applications on smartphones and tablets in terms of network demand and time use. Using a detailed mixed methods study with eight participants, we first provide an account of how data demand has meaning and utility in our participants' social practices, and the timing and relative impacts of these. We then assess the scale of this demand by drawing comparison between our fine-grained observations and a more representative dataset of 398 devices from the Device Analyzer corpus. Our results highlight the significant categories of data demanding practice, and the identification of where changes in app time and duration of use might reduce or shift demand to reduce services' impacts.

[1]  Phoebe Sengers,et al.  What I learned on Change Islands: reflections on IT and pace of life , 2011, INTR.

[2]  Adrian Friday,et al.  Demand in My Pocket: Mobile Devices and the Data Connectivity Marshalled in Support of Everyday Practice , 2015, CHI.

[3]  Lorenz M. Hilty,et al.  The Energy Intensity of the Internet: Edge and Core Networks , 2015, ICT Innovations for Sustainability.

[4]  Jorge Gonçalves,et al.  A Systematic Assessment of Smartphone Usage Gaps , 2016, CHI.

[5]  A. J. Bernheim Brush,et al.  Home computing unplugged: why, where and when people use different connected devices at home , 2013, UbiComp.

[6]  Paul Shabajee,et al.  Modeling and Assessing Variability in Energy Consumption During the Use Stage of Online Multimedia Services , 2013 .

[7]  Adrian Friday,et al.  Towards an holistic view of the energy and environmental impacts of domestic media and IT , 2014, CHI.

[8]  Johannes Schöning,et al.  Falling asleep with Angry Birds, Facebook and Kindle: a large scale study on mobile application usage , 2011, Mobile HCI.

[9]  Eli Blevis,et al.  Sustainable millennials: attitudes towards sustainability and the material effects of interactive technologies , 2008, CHI.

[10]  Mike Berners-Lee,et al.  How Bad Are Bananas?: The carbon footprint of everything , 2010 .

[11]  Deborah Estrin,et al.  Diversity in smartphone usage , 2010, MobiSys '10.

[12]  Chris Preist,et al.  A Review of Top-Down Models of Internet Network Energy Intensity , 2014, ICT4S.

[13]  Veronika Horvath,et al.  Living Room Connected Devices , 2014 .

[14]  Zhaohui Wu,et al.  Discovering different kinds of smartphone users through their application usage behaviors , 2016, UbiComp.

[15]  Cisco Visual Networking Index: Forecast and Methodology 2016-2021.(2017) http://www.cisco.com/c/en/us/solutions/collateral/service-provider/visual- networking-index-vni/complete-white-paper-c11-481360.html. High Efficiency Video Coding (HEVC) Algorithms and Architectures https://jvet.hhi.fraunhofer. , 2017 .

[16]  Yolande A. A. Strengers,et al.  Designing eco-feedback systems for everyday life , 2011, CHI.

[17]  Morgan G. Ames.  Managing mobile multitasking: the culture of iPhones on stanford campus , 2013, CSCW.

[18]  福井 孝宗,et al.  書評 Sherry Turkle "Alone Together : Why We Expect More From Technology and Less From Each Other" , 2012 .

[19]  Richard Banks,et al.  You're capped: understanding the effects of bandwidth caps on broadband use in the home , 2012, CHI.

[20]  Paul Shabajee,et al.  Energy Use in the Media Cloud: Behaviour Change, or Technofix? , 2010, 2010 IEEE Second International Conference on Cloud Computing Technology and Science.

[21]  Tapio Soikkeli,et al.  Diversity and End User Context in Smartphone Usage Sessions , 2011, 2011 Fifth International Conference on Next Generation Mobile Applications, Services and Technologies.

[22]  Elaine M. Huang,et al.  Bridging the Theory-Practice Gap: Lessons and Challenges of Applying the Attachment Framework for Sustainable HCI Design , 2015, CHI.

[23]  Phoebe Sengers,et al.  "I lie to myself that i have freedom in my own schedule": productivity tools and experiences of busyness , 2011, CHI.

[24]  Robert E. Kraut,et al.  Project massive: self-regulation and problematic use of online gaming , 2007, CHI.

[25]  Inge Røpke,et al.  Energy impacts of ICT - Insights from an everyday life perspective , 2012, Telematics Informatics.

[26]  Daniel Schien,et al.  Grey Energy and Environmental Impacts of ICT Hardware , 2015, ICT Innovations for Sustainability.

[27]  Mika Pantzar,et al.  The Dynamics of Social Practice: Everyday Life and how it Changes , 2012 .

[28]  Dzmitry Aliakseyeu,et al.  Slow design for meaningful interactions , 2013, CHI.

[29]  Lorenz M. Hilty.  Information Technology and Sustainability - Essays on the Relationship between Information Technology and Sustainable Development , 2008 .

[30]  Elaine M. Huang,et al.  iPods, Ataris, and Polaroids: a personal inventories study of out-of-use electronics in Swiss households , 2012, UbiComp '12.

[31]  Virpi Roto,et al.  Interaction in 4-second bursts: the fragmented nature of attentional resources in mobile HCI , 2005, CHI.

[32]  Eli Blevis,et al.  Understanding and Mitigating the Effects of Device and Cloud Service Design Decisions on the Environmental Footprint of Digital Infrastructure , 2016, CHI.

[33]  Gloria Mark,et al.  "A pace not dictated by electrons": an empirical study of work without email , 2012, CHI.

[34]  J. Cheung.  Alone Together: Why We Expect More from Technology and Less from Each Other , 2013 .

[35]  Jorge Gonçalves,et al.  Revisitation analysis of smartphone app use , 2015, UbiComp.

[36]  Jorge Gonçalves,et al.  Contextual experience sampling of mobile application micro-usage , 2014, MobileHCI '14.

[37]  Cédric Gossart.  « Information technology and sustainability: Essays on the relationship between information technology and sustainable development », de Lorenz M. Hilty (2008), Books on Demand. Compte-rendu d’ouvrage , 2010 .

[38]  Robert E. Pinsker,et al.  Alone Together: Why We Expect More from Technology and Less from Each Other. , 2012 .