/ Papers / Using visual tags to bypass Bluetooth device discovery
Journal paper in SIGMOBILE Mob. Comput. Commun. Rev. (vol 9 issue 1), Jan 2005
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Abstract. One factor that has limited the use of Bluetooth as a networking technology for publicly accessible mobile services is the way in which it handles Device Discovery. Establishing a Bluetooth connection between two devices that have not seen each other before is slow and, from a usability perspective, often awkward. In this paper we present the implementation of an end-to-end Bluetooth-based mobile service framework designed specifically to address this issue. Rather than using the standard Bluetooth Device Discovery model to detect nearby mobile services, our system relies on machine-readable visual tags for out-of-band device and service selection. Our work is motivated by the recent proliferation of cameraphones and PDAs with built-in cameras. We have implemented the described framework completely for Nokia Series 60 cameraphones and demonstrated that our tag-based connection-establishment technique (i) offers order of magnitude time improvements over the standard Bluetooth Device Discovery model; and (ii) is significantly easier to use in a variety of realistic scenarios. Our implementation is available for free download.

Authors. Dave Scott, Richard Sharp, Anil Madhavapeddy and Eben Upton

See Also. This publication was part of the Ubiquitous Interaction Devices project.

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Jan 2005. «» Journal paper on our SpotCode visual tag system for cameraphones.