Measuring the linear and rotational user precision in touch pointing

@inproceedings{Brard2012MeasuringTL,
  title={Measuring the linear and rotational user precision in touch pointing},
  author={François B{\'e}rard and Am{\'e}lie Rochet-Capellan},
  booktitle={International Conference on Intelligent Tutoring Systems},
  year={2012}
}
This paper addresses the limit of user precision in pointing to a target when the finger is already in contact with a touch surface. User precision was measured for linear and rotational pointing. We developed a novel experimental protocol that improves the estimation of user's precision as compare to previous protocols. Our protocol depends on high-resolution measurements of finger motions. This was achieved by the means of two optical finger trackers specially developed for this study. The… 

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