A magnetic hand motion tracking system for a variety of applications requiring human–machine interaction is presented. Small permanent magnets are fixed on fingernails as signal sources. A series of magnetic sensors on a wristband measure magnetic signals related to the movements of the fingertips. The measured data are transmitted to the application wirelessly. A hand geometric model and a least-square source localisation algorithm are utilised to calculate the hand postures. This system does not require wire connections and can be used conveniently and unobstructively.
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Ma et al. (2010) studied this question.
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