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MagiWrite: Towards Touchless Digit Entry Using 3D Space Around Mobile Devices
Citation key ketabdar2010j
Author Ketabdar, Hamed and Yuksel, Kamer Ali and Roshandel, Mehran
Title of Book The Twelfth International Conference on Human-Computer Interaction with Mobile Devices and Services,
Pages 443–446
Year 2010
ISBN 978-1-60558-835-3
DOI 10.1145/1851600.1851701
Location Lisbon, Portugal
Month sep
Publisher ACM New York, NY, USA textcopyright2010
Abstract In this work, we present a new approach for text (mainly digit) entry based on digit shaped gestures created in 3D space around a mobile device. Some new mobile devices such as Apple iPhone 3GS and Google Android are equipped with magnetic (compass) sensor. The main idea is to influence the magnetic sensor using a magnet taken in hand. The user draws (writes) digits in the 3D space around the device using the magnet taken in hand. Movement of the magnet changes temporal pattern of magnetic field around the device which is sensed and registered by the magnetic (compass) sensor. The registered pattern is then compared against already recorded templates for different digits. Such a text (digit) entry approach can be especially useful for small mobile devices in which it is hard to operate small buttons or touch screen. Using our technique, the text entry space extends beyond physical boundaries of the device. A demonstrator for this approach is implemented on Apple iPhone 3GS platform. It demonstrates registering a few templates for different digits, and recognizing digits written in the space around the device.
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