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Every Friday I pick a paper from the ACM Digital Library that is found by the search term +connected +2005 +"mobile device" +"user interface", and write a brief discussion of it. Why? Because it makes me actually read them.

virtual journal club: "Connected Mobile Devices UI"
Friday, March 11, 2005
Hubbub: a sound-enhanced mobile instant messenger that supports awareness and opportunistic interactions 
Link

Ellen Isaacs AT&T Labs, Menlo Park, CA
Alan Walendowski AT&T Labs, Menlo Park, CA
Dipti Ranganthan AT&T Labs, Menlo Park, CA

onference on Human Factors in Computing Systems archive
Proceedings of the SIGCHI conference on Human factors in computing systems: Changing our world, changing ourselves table of contents
Minneapolis, Minnesota, USA
SESSION: I Think, therefore IM table of contents
Pages: 179 - 186
Year of Publication: 2002
ISBN:1-58113-453-3

Abstract:
There have been many attempts to support awareness and lightweight interactions using video and audio, but few have been built on widely available infrastructure. Text-based systems have become more popular, but few support awareness, opportunistic conversations, and mobility, three important elements of distributed collaboration. We built on the popularity of text-based Instant Messengers (IM) by building a mobile IM called Hubbub that tries to provide all three, notably through the use of earcons. In a 5.5-month use study, we found that Hubbub helped people feel connected to colleagues in other locations and supported opportunistic interactions. The sounds provided effective awareness cues, although some found them annoying. It was more important to support graceful transitions between multiple fixed locations than to support wireless access, although both were useful


My Discussion:
Many of the innovations in IM have already been taken up into the large systems like Yahoo! and AIM, but with modifications: instead of people having a personal sound, they have personal avatar icons. They also include sounds to announce someone has joined or left (although not personalized to the person in question), and specialised clients like Trillian also allow sounds for when people start or stop being idle. The systems now alos give visual feedback of when someone is typing. Not implemented (much to my personal dismay) is the innovation described in the paper of making it possible for the same person to be logged in on multiple locations, like both desktop and mobile device, and the system making a choice where to deliver the IM based on what device has been idel least (AIM is coming close to this now, though. Yahoo insist on having the user be logged in on only one device and choosing which explicitly).

This is a clear, well-written, and comprehensive paper in that it describes a system clearly and the use of the system, complete with quantitative and qualitative data. While, as I said, the system may be outdated, the data and recorded attitudes about IM are very valuable to now have as a good refernce to point to when building future work on mobile IM. The attitudes recorded about the sense of presence, and the mentioning how the IM clients had to be re-designed to deal with spotty mobile connectivity, are also very useful in this regard.

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