Reflections on the Long-term Use of an Experimental Digital Signage System
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Transcript of Reflections on the Long-term Use of an Experimental Digital Signage System
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Reflections on the Long-term Use of an Experimental
Public Display SystemSarah Clinch1, Nigel Davies1, Adrian Friday1 and
Christos Efstratiou2
1Lancaster University, 2Cambridge University, UK.
Tuesday, 20 September 11
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2005 20112008
e-Campus begins [1] e-Channels in everyday use 30 displays,81 users,
33 groups,3,700 pieces
of content
We reflect on use of e-Channels:a system for enabling the shared use of networked
situated displays by trusted user groups
[1] Public ubiquitous computing systems: Lessons from the e-campus display deployments. IEEE Pervasive Computing, 5 (3). pp. 40-47. ISSN 1536-1268
Tuesday, 20 September 11
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Woah!
should this really be our decision?
we need to design something that scales better...
Need to give users ownership of displaysDesign goals: simplicity & stimulate ‘a network effect’
Problem: our approval of content was a bottleneck
Tuesday, 20 September 11
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content is arranged into ‘channels’ by users (in known groups)
[2] Storz, Oliver and Friday, Adrian and Davies, Nigel (2006) Supporting content scheduling on situated public displays. Computers & Graphics, 30 (5). pp. 681-691
[2]
e-Channels
Channels SchedulerWeb UI
mediafiles
Display Owner
channelsubscriptions
Content Provider
channel properties,
subscriptionschannel properties
file systemchanges Displays
schedulecontent
file systemdropbox
Role 1
Role 2
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User experience video
The content provider sees this...
Tuesday, 20 September 11
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User experience video
The display owner sees this...
Tuesday, 20 September 11
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Questions we answer1. How did the e-Channels system get
used - are channels a useful abstraction?
2. Do users generate content to share or are they selfish? i.e. is there a network effect?
3. What content do they put into the system, how is it characterised?
4. Does the system get abused, or do we retain control?
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Q1: Channels are used, flexibly
Group content and ‘suspend’ used during updates
Rarely deleted just suspended
CHANNEL_ACTIVATE CHANNEL_ADDCHANNEL_DELETE CHANNEL_SUSPEND
A range of channel related practices
# c
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1 channel,frequent content
little content, lots of subscriptions
engagement stops, with staff change
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Q2: Sharing
To our surprise, 53% of channels are ‘shared channels’ available to the network
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Shared Private
We do our own thing
Just our public channel
We do both!
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They'll never share
ade
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Q3: Content lifeIs short (7-10 days) -23% news, 16% forthcoming events
Or long (~120 days)11% building projects, 9% services
More content is added than removed!
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Q3: Context & ValidityContent rarely tightly bound to location, but often audience
24% had no obvious time constraints
8% had a validity of one day; 8% < 1 week; 12% a month; 21% 2-3 months, and 12% a validity of 1 year+
Unsupported5.3%
Stream0.3%
Web pages4.1%
Video7.1%
Images83.2%
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Q4: Trust, Moderation & Abuse
• e-Channels took per-item moderation from us to trusted user groups, devolving control
• Only 2 abuses reported:
• decontextualisation (video with sound during an exam)
• situated-ness (a particular message a college dean worried would be interpreted as theirs)
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Gaming the System
• We found duplicate content across channels - but also within a channel!
• Also sneaky ‘static-video-slides’
• Deliberate practice to gain air time - shows understanding
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Take home
• Reflected on how e-Channels has been adopted & found it is effective in sharing networked displays with many stakeholders
• Trusted content providers devolve moderation and keep control & do generate content for sharing
• Display owners find a balance between monopoly and shared content
• Users continue to underestimate the cost & effort of producing content
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Partially funded by the PD-NET project: http://pd-net.orgPD-NET is a FET-Open project funded from the European Union Seventh Framework Programme (FP7/2007-2013) under grant agreement no. 244011
Please see the paper for fuller explanations of the data and the unexpurgated design lessons
Questions?
Adrian [email protected]://www.comp.lancs.ac.uk/~adrianhttp://pd-net.org
Tuesday, 20 September 11