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Newport is a collaborative application for sharing context (e.g. location) and content (e.g. photos and notes) during mobile phone calls. People can share during a phone call and sharing ends when the call ends. Newport also supports using a computer during a call to make it easier to share content from the phone or launch screen sharing if the caller is also at a computer. We describe Newport’s system design and a formative evaluation with 12 participants to study their experience using Newport to share location, receive directions, share photos, and perform desktop sharing. Participants preferred using Newport to current methods for these tasks. They also preferred limiting sharing location to phone calls compared with publishing it continuously. Tying sharing to a phone call gives individuals a social sense of security, providing a mechanism for exchanging information with unknown people.
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Newport: Enabling Sharing During Mobile Calls
Junius Gunaratne and A.J. Brush
Sharing content during a call
Phones and computers are isolated
Motivation for building Newport
• Leverage the phone call as permission to share additional context and content– Simple metaphor: When call ends, sharing ends
• Leverage computers in the environment during phone calls– More screen real-estate, interaction has fewer
constraints
Newport• Phone application• Supporting desktop application
Phone can request content directly from cloud on networks that support simultaneous voice and data connections (We did not implement)
Newport functionality• Newport includes three sharing applications– Maps, photos, notes—can easily be extended to any Windows
Mobile application• Draw and annotate on a mobile phone screen or on a
personal computer
Newport Desktop
Design advantages and challenges
• Using broadband to send large files vs. slower cellular network
• Sharing without a data plan– Support simultaneous voice and data connections
• Latency of SMS– Manually ask to resend
Research questions for study design
• Have people experienced the sharing scenarios supported by Newport?
Research questions for study design
• Have people experienced the sharing scenarios supported by Newport?
• Is sharing content during calls valuable?
Research questions for study design
• Have people experienced the sharing scenarios supported by Newport?
• Is sharing content during calls valuable?• Does a phone call help establish more trust?– Specifically for location sharing
Research questions for study design
• Have people experienced the sharing scenarios supported by Newport?
• Is sharing content during calls valuable?• Does a phone call help establish more trust?– Specifically for location sharing
• How valuable is using a nearby computer while sharing during a call?
Method• 12 participant lab study – 6 men, 6 women
• Own smart phone– iPhone, Android, Windows Mobile, Blackberry
• Shared with researcher during study• Interviews and surveys
Tasks• Location sharing– Using current mobile phone verbally– Using Newport to share location– Sending location to a restaurant
• Multiple devices– Shared photos from phones– Shared photos: computer and phone
• Synchronous collaboration– Booking a trip with a friend– Working with a travel agent
Results
• Participants do share during mobile calls– Similar to Wiltse and Nichols (2009) research
• Uniformly positive feedback on Newport• Preferred Newport software to standard smart
phone
Results: Location Sharing
• Positively received• Evidence that sharing location limited to call has
wider appeal than publishing/subscribe model• Perception of control– “I wouldn’t want to have anyone track me down, I
had more control over the phone. I was sending it to them, they weren’t taking it without my knowledge.”
• Alleviates privacy and security concerns
A social sense of security
• Sharing additional information due to phone call– “I prefer giving my location over the phone to a
specific person rather than sharing like Loopt” • Affords sharing with unknown people– “Since I’m a woman I would feel uncomfortable
sharing my location with people I don’t know well, but I do feel a bit more comfortable sharing when I’m talking to someone on the phone.”
Results: Multiple Devices
• Generally positive about using larger displays• 11 of 12 users indicated visual sharing
improved the task at hand—greater satisfaction
• Half would not actively seek out a display– 3 would walk 1 min. to a display; another 3, 5 min.
Wrapping up
• Leverage the phone call/communication channel as “permission” for sharing
• Make phone and computer better together• Uniformly positive feedback from users• Evidence that sharing location limited to call
gives people a social sense of security– Wider appeal than publish/subscribe model– Particularly of “sensitive” information with
unfamiliar people
Supporting research: visuals and voice
• 1970s Chapanis et al studied the effects of communications modes on teams in cooperative problem solving– Visual communication significantly improves
task completion times and satisfaction• Wiltse and Nichols (2009), cooperative
web browsing– Tasks solely using voice are extremely
tedious• Adding visuals to IM, chat rooms,
collaborative spaces improves communication
Dynamo public media sharing, Izadi et al 2003
ProD framework, Congleton et al 2008
