Lag as a determinant of human performance in interactive systems
INTERCHI '93 Proceedings of the INTERCHI '93 conference on Human factors in computing systems
Ambient touch: designing tactile interfaces for handheld devices
Proceedings of the 15th annual ACM symposium on User interface software and technology
Tactile virtual buttons for mobile devices
CHI '03 Extended Abstracts on Human Factors in Computing Systems
DIS '02 Proceedings of the 4th conference on Designing interactive systems: processes, practices, methods, and techniques
Sensitivity to haptic-audio asynchrony
Proceedings of the 5th international conference on Multimodal interfaces
Multidimensional tactons for non-visual information presentation in mobile devices
Proceedings of the 8th conference on Human-computer interaction with mobile devices and services
New parameters for tacton design
CHI '07 Extended Abstracts on Human Factors in Computing Systems
Investigating the effectiveness of tactile feedback for mobile touchscreens
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Designing Large Sets of Haptic Icons with Rhythm
EuroHaptics '08 Proceedings of the 6th international conference on Haptics: Perception, Devices and Scenarios
Spatiotemporal Visuotactile Interaction
EuroHaptics '08 Proceedings of the 6th international conference on Haptics: Perception, Devices and Scenarios
Feedback is... late: measuring multimodal delays in mobile device touchscreen interaction
International Conference on Multimodal Interfaces and the Workshop on Machine Learning for Multimodal Interaction
Gesture tracking and recognition in touchscreens usability testing
Proceedings of the International Conference on Multimedia, Interaction, Design and Innovation
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A great deal of research has investigated the potential parameters of tactile feedback for virtual buttons. However, these studies do not take the possible effects of feedback latencies into account. Therefore, this research investigates the impact of tactile feedback delays on touchscreen keyboard usage. The first experiment investigated four tactile feedback delay conditions during a number entry task. The results showed that keypads with a constant delay (18 ms) and the smallest feedback delay variation were faster to use and produced less errors compared to conditions with wider delay variability. The experiment also produced an unexpected finding - users seemed to perceive buttons with longer delays as heavier, with a need for greater force when pressing. Therefore another experiment was conducted to investigate this phenomenon. Seven delay conditions were tested using a magnitude estimation method. The results indicate that using different latencies can be used to represent tactile weight in touchscreen interaction.