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Social Media in VideoCafé2.0: How Social Media promote informal communication in VideoCafe
KTH, School of Information and Communication Technology (ICT).
2015 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Video Café 2.0 is a media space that aims to support informal communication among the EIT laboratories which are located in different countries: Sweden, Finland, Netherland, Germany and France. The system creates an always-­‐online, real-­‐time acoustic and video environment allowing people to communicate at anytime. The first version of VideoCafe was originated by K. Tollmar in 1996 to study how video-­‐ mediated communication technology plays a role in informal communication at workplace. The result has shown that the number of established relationships between two labs increased from 26 to 39 after 6 month. The study also reported that there were very little activities through the system because there is no real context of informal contacts, the communication with unfamiliar people is difficult to occur.

To overcome the problems mentioned above, social media service (cyber space) is augmented to the corresponding physical space. Twitter is introduced as an additional tool. This powerful media is very accessible allowing users to create contents, share and receive information in real-­‐time. It can be seen as a playful media that engages people during causal time at workplace. The core research question is how social media can promote interaction in VideoCafe. This question is hypothesized that people will use social media as an asynchronous communication channel as well as a synchronous communication channel to support the video conferencing session. We also expected the message from other EIT nodes will keep users in touch, and worldwide news feeds will engage people to the social display which increases the chance of interaction.

A simple version of twitter client is provided on the top of video stream. Users can read and write messages from the VideoCafe display, mobile phone and other devices. We also propose a new mode for twitter client, called TwitterShow. This mode animates Twitter messages in 3D in full screen with transparent background. The purpose is to make the social screen more attractive. Three evaluation techniques are proposed to assess and shape the prototypes in different ways. These comprise a quick and dirty evaluation, a usability testing (retrospective think aloud protocol) and a field study. The evaluations were conducted along with the iterative design.

Many design errors were detected and fixed during the quick and dirty evaluation, and usability testing. The outcome is the final prototype which will be installed in the field study. This experiment ran for two weeks. The result show that twitter as backchannel in media space support asynchronous more than synchronous interactions. And these interactions are short and mostly about current situation happening around physical spaces. Even though people feel that they did not learn about other nodes, status update help them feel more connected. This means it can raise awareness of all VideoCafe nodes. The tool also facilitated synchronous collaboration when the main channel became problematic. During the test, twitter was used to complement to the main channel, and it can initiate casual encounters. In users’ perspective, twitter is not a very interesting engagement tool, since two-­‐way communications barely happened. They felt that twitter increase very few interactions.

Place, publisher, year, edition, pages
2015. , p. 73
Series
TRITA-ICT-EX ; 2015:259
National Category
Computer Systems
Identifiers
URN: urn:nbn:se:kth:diva-210819OAI: oai:DiVA.org:kth-210819DiVA, id: diva2:1120309
Subject / course
Electronic- and Computer Systems
Educational program
Master of Science - Design and Implementation of ICT Products and Systems
Examiners
Available from: 2017-07-06 Created: 2017-07-06 Last updated: 2017-07-06Bibliographically approved

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