A digitizing or pen tablet is a flat device that allows recording handwriting movements. Usually these devices are based on an electromagnetic principle. The tablet has an embedded wire grid which acts as a transmitter. The pen (which is specifically designed for the tablet) acts as an antenna, which resonates and emits a signal that is captured by the tablet, allowing to detect its position with high accuracy. This allows the tablet to detect the pen movement even if it is not in contact with the tablet (in a reasonable range of proximity).
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(2009). Pen Tablet. In: Li, S.Z., Jain, A. (eds) Encyclopedia of Biometrics. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-73003-5_1016
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DOI: https://doi.org/10.1007/978-0-387-73003-5_1016
Publisher Name: Springer, Boston, MA
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