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Supporting casual interactions between board games on public tabletop displays and mobile devices

Supporting casual interactions between board games on public tabletop displays and mobile devices,10.1007/s00779-009-0246-3,Personal and Ubiquitous Co

Supporting casual interactions between board games on public tabletop displays and mobile devices   (Citations: 3)
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As more interactive surfaces enter public life, casual interactions from passersby are bound to in- crease. Most of these users can be expected to carry a mobile phone or PDA, which nowadays oers signicant computing capabilities of its own. This oers new possi- bilities for interaction between these users' private dis- plays and large public ones. In this paper, we present a system which supports such casual interactions. We rst explore a method to track mobile phones that are placed on a horizontal in- teractive surface by examining the shadows which are cast on the surface. This approach detects the presence of a mobile device, as opposed to any other opaque ob- ject, through the signal strength emitted by the built-in Bluetooth transceiver without requiring any modica- tions to the devices' software or hardware. We then go on to investigate interaction between a Sudoku game running in parallel on the public display and on mobile devices carried by passing users. Mobile users can join a running game by placing their devices on a designated area. The only requirement is that the device is in discoverable Bluetooth mode. After a specic device has been recognized, a client software is sent to the device which then enables the user to interact with the running game. Finally, we explore the results of a study which we conducted to determine the eectiveness and intrusiveness of interactions between users on the tabletop and users with mobile devices.
Journal: Personal and Ubiquitous Computing - PUC , vol. 13, no. 8, pp. 609-617, 2009
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