Low-cost multi-touch sensing through frustrated total internal reflection
Proceedings of the 18th annual ACM symposium on User interface software and technology
ThinSight: integrated optical multi-touch sensing through thin form-factor displays
EDT '07 Proceedings of the 2007 workshop on Emerging displays technologies: images and beyond: the future of displays and interacton
FLATIR: FTIR multi-touch detection on a discrete distributed sensor array
Proceedings of the 3rd International Conference on Tangible and Embedded Interaction
ZeroTouch: an optical multi-touch and free-air interaction architecture
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
HACHIStack: dual-layer photo touch sensing for haptic and auditory tapping interaction
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
uTouch: sensing touch gestures on unmodified LCDs
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
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In recent years, a large number of multitouch sensor concepts have been presented. Particularly optical sensors are highly popular due to their versatility. However, especially camera-based systems often require a significant amount of space behind the screen and are not well suited to flatscreen-based setups. While integrated sensors for flatscreens have already been presented, they are mostly complex, expensive or both. To address these problems, a novel type of multitouch sensor is presented which extends a common LCD monitor with multitouch capabilities without significant depth requirements. The sensor consists of a homogeneous matrix of cheap, mass-produced infrared LEDs. The LCD surface remains unmodified, resulting in a pleasant haptic experience for the user.