Interacting with paper on the DigitalDesk
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As computer-based multimedia content for educational and industrial venues is being further developed, a new input device is needed to interact with objects for application in these areas. This paper introduces the Laser Shot System that uses a convention laser pointer as a pointing device, allowing many degrees of freedom when selecting objects displayed on a large screen that is located a far distance from the user. The main purpose of the device is to enable the user to interact with multimedia content in a spacious area; whereas, selecting objects on a screen located a substantial distance from the user is difficult with current general input methods such as a keyboard and mouse, even with radio frequency enabled widgets. To demonstrate the efficacy of the laser shot system, a virtual aquarium was projected on a large-scale screen by a beam projector to produce an effect similar to a science hall. Preliminary evidence obtained showed that the task of selecting specific objects on the screen and obtaining desired information when the user is located a far distance from the screen using the Laser Shot System was simple. It is expected that the results from this study could contribute to the design of input methods for large screen-based interactive learning technologies for educational setting.