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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, January 30, 2004
The connected user interface: realizing a personal situated navigation service 
Link

Antonio Krüger Saarland University, Saarbrücken, Germany
Andreas Butz Saarland University, Saarbrücken, Germany
Christian Müller DFKI GmbH, Saarbrücken, Germany
Christoph Stahl Saarland University, Saarbrücken, Germany
Rainer Wasinger DFKI GmbH, Saarbrücken, Germany
Karl-Ernst Steinberg BMW Research, D-München, Germany
Andreas Dirschl BMW Research, D-München, Germany

International Conference on Intelligent User Interfaces archive
Proceedings of the 9th international conference on Intelligent user interface table of contents
Funchal, Madeira, Portugal
SESSION: Novel interaction modalities
Pages: 161 - 168
Year of Publication: 2004
ISBN:1-58113-815-6

Abstract: Navigation services can be found in different situations and contexts: while connected to the web through a desktop PC, in cars, and more recently on PDAs while on foot. These services are usually well designed for their specific purpose, but fail to work in other situations. In this paper we present an approach that connects a variety of specialized user interfaces to achieve a personal navigation service spanning different situations. We describe the concepts behind the \bf BPN (BMW Personal Navigator), an entirely implemented system that combines a desktop event and route planner, a car navigation system, and a multi-modal, in- and outdoor pedestrian navigation system for a PDA. Rather than designing for one unified UI, we focus on connecting specialized UIs for desktop, in-car and on-foot use.

Keywords: pedestrian navigation systems, ubiquitous interfaces

My Discussion:
An interesting blend of showing the same data on different devices, each associated with its own user context. The user plans a trip on a sophisiticated server that pulls data over the web from event, weather, and map services. The trip is uploaded to a PDA, and through the PDA to the GPS service in the car. When the user is driving the GPS Map service in the car informs the user, when walking the PDA informs the user, using optional 3D views + landmarks for user orientations. The researchers are very convinced not to use a single mobile device to do it all, but using devices as available in the user context. Also, clever massaging of data inside a single back-end server creates a seamless experience, but having the PDA carry all the data of the trip to share with other devices makes the system work even when not connected. The call the papaer "the connected user interface", but create a system that needs only the PC connection to download stuff to the PODA, losing spontaneity for trip-planning, but creating high reliability fro planned trips.

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