Double tap is a form of movement interaction where the user performs two consecutive taps on a mobile device with a finger or palm, each producing a sharp spike waveform in an accelerometer signal measured with a high sampling rate. Gesture Interaction: Gesture interaction here refers to explicit movements made with a mobile device while holding it in a hand in order to perform any tasks with the device.
Published in Chapter:
Unobtrusive Movement Interaction for Mobile Devices
Panu Korpipää (Finwe Ltd., Finland), Jukka Linjama (Nokia, Finland), Juha Kela (Finwe Ltd., Finland), and Tapani Rantakokko (Finwe Ltd., Finland)
Copyright: © 2008
|Pages: 17
DOI: 10.4018/978-1-59904-871-0.ch030
Abstract
Gesture control of mobile devices is an emerging user interaction modality. Large-scale deployment has been delayed by two main technical challenges: detecting gestures reliably and power consumption. There have also been user-experience-related challenges, such as indicating the start of a gesture, social acceptance, and feedback on the gesture detection status. This chapter evaluates a solution for the main challenges: an event-based movement interaction modality, tapping, that emphasizes minimal user effort in interacting with a mobile device. The technical feasibility of the interaction method is examined with a smartphone equipped with a sensor interaction cover, utilizing an enabling software framework. The reliability of detecting tapping is evaluated by analyzing a dataset collected with the smartphone prototype. Overall, the results suggest that detecting tapping is reliable enough for practical applications in mobile computing when the interaction is performed in a stationary situation.