Lucid touch: a see-through mobile device
Proceedings of the 20th annual ACM symposium on User interface software and technology
SideSight: multi-"touch" interaction around small devices
Proceedings of the 21st annual ACM symposium on User interface software and technology
Scratch input: creating large, inexpensive, unpowered and mobile finger input surfaces
Proceedings of the 21st annual ACM symposium on User interface software and technology
Back-of-device interaction allows creating very small touch devices
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Clip-on gadgets: expanding multi-touch interaction area with unpowered tactile controls
Proceedings of the 24th annual ACM symposium on User interface software and technology
Fat finger worries: how older and younger users physically interact with PDAs
INTERACT'05 Proceedings of the 2005 IFIP TC13 international conference on Human-Computer Interaction
VibPress: estimating pressure input using vibration absorption on mobile devices
Proceedings of the 15th international conference on Human-computer interaction with mobile devices and services
Pseudo-pressure detection and its use in predictive text entry on touchscreens
Proceedings of the 25th Australian Computer-Human Interaction Conference: Augmentation, Application, Innovation, Collaboration
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We propose a new interaction technique, called PseudoButton, which emulates a pressure-sensitive touch sensor by repurposing a built-in microphone on mobile devices. This simple and novel technique increases input expressivity of the device and expands its interaction area for users to alleviate the occlusion problem caused by touchscreens without adding extra sensors. To verify our idea, we implemented a prototype and conducted a preliminary evaluation on it. The results show that participants can input at accuracy of 94% for five different pressure levels with minimal error.