CoPresent Photo Sharing on Mobile Devices

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Co-Present Photo Sharing on Mobile Devices
Leonard Ah Kun Supervisor Gary Marsden
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The Past
Co-Present Photo Sharing on Mobile Devices
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Traditional Photo Sharing
Co-Present Photo Sharing on Mobile Devices

• Co-located sharing with friends and family
• Gather around photo albums or pass photos around
• Birth of Kodak Culture
• Desirable social activity

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Digital Photo Sharing
Co-Present Photo Sharing on Mobile Devices

• Digital cameras allow taking of more photos and
  lower costs
• Camera phones allow instant sharing
• MMS, E-mail, Mobile Blogs, Facebook, etc.
• Printing photos cost money
• Co-present sharing supported by external displays
• Inconvenient outside the home

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Our Solution
Co-Present Photo Sharing on Mobile Devices

• Almost everyone owns their own mobile phone
  essentially they own personal display.
• New phones adopting Wi-Fi and fully touch screen
• Broadcast photos to all displays
• Prototype uses PDA has a handset surrogate.

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Video Demo
Co-Present Photo Sharing on Mobile Devices
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Research Questions
Co-Present Photo Sharing on Mobile Devices

• How would people use this system?
• Is it as compelling as traditional photo sharing?
• How is coordination managed?
• When can someone control the display?
• Do we need software locks?
• Are social protocols suffice?

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Host-Token Policy
Co-Present Photo Sharing on Mobile Devices
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Three-Second Policy
Co-Present Photo Sharing on Mobile Devices
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Free-for-all Mode
Co-Present Photo Sharing on Mobile Devices
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Experiment Design
Co-Present Photo Sharing on Mobile Devices

• Conducted Naturalistic Observation
• Groups of friends that shared experience and took
  photos
• Tested all policies implemented
• Held post discussion

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Observations
Co-Present Photo Sharing on Mobile Devices

• System supports 2 types of interaction
• Storytelling
• Entertainment (drawing and teasing)

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Host-Token Policy
Co-Present Photo Sharing on Mobile Devices

• Preferred policy by participants
• Good for storytelling
• Full control over shared display
• No confusion who had host
• Could not release host
• Multiple host requests can be irritating

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Free-For-All Mode
Co-Present Photo Sharing on Mobile Devices

• Chaotic
• Participants discovered that they could all draw
  simultaneously
• Found this entertaining
• Used for teasing
• Not good for storytelling

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Three-Second Policy
Co-Present Photo Sharing on Mobile Devices

• Least favourite policy
• Caused frustration and confusion
• Did not know who was in control
• Social protocol emerged

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Conclusion
Co-Present Photo Sharing on Mobile Devices

• Participants found our system compelling, fun and
  easy to use.
• Advantages of our system
• Zoom capability
• Share all photos rather than selected few
• Photo being viewed corresponds to story being
  told
• Drawing capability

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Conclusion
Co-Present Photo Sharing on Mobile Devices

• Software locks are needed for coordination
• Host-token worked best for storytelling
• Free-for-all mode too chaotic
• Not good for storytelling
• Does have entertainment uses with collaborative
  drawing and teasing

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Questions?
Co-Present Photo Sharing on Mobile Devices