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The generalized perceived input point model and how to double touch accuracy by extracting fingerprints

Holz, Christian, Baudisch, Patrick·2010·Proceedings of the SIGCHI Conference on Human Factors in Computing Systems

Abstract

It is generally assumed that touch input cannot be accurate because of the fat finger problem, i.e., the softness of the fingertip combined with the occlusion of the target by the finger. In this paper, we show that this is not the case. We base our argument on a new model of touch inaccuracy. Our model is not based on the fat finger problem, but on the perceived input point model. In its published form, this model states that touch screens report touch location at an offset from the intended target. We generalize this model so that it represents offsets for individual finger postures and users. We thereby switch from the traditional 2D model of touch to a model that considers touch a phenomenon in 3-space. We report a user study, in which the generalized model explained 67% of the touch inaccuracy that was previously attributed to the fat finger problem.

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Metadata

Authors
Holz, C., & Baudisch, P.
Venue
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Publisher
ACM
Published
2010-04-10
Pages
581-590
OpenAlex
W2149344674
Cited by
262
References
2
FWCI
20.83
Type
conference paper
Language
en
Open access
closed

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CoChat. (2026). Citation check: The generalized perceived input point model and how to double touch accuracy by extracting fingerprints. https://app.cochat.ai/papers/10.1145/1753326.1753413
The paper
Holz, C., & Baudisch, P. (2010). The generalized perceived input point model and how to double touch accuracy by extracting fingerprints. Proceedings of the SIGCHI Conference on Human Factors in Computing Systems. https://doi.org/10.1145/1753326.1753413

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.