In a fingerprint device, the term platen refers to the surface of a sensor on which the finger should roll or adhere. It can be done of different materials, but it is mainly done with glass. In a hand-geometry device, it means the flat surface of the hand geometry reader on which the person presented to the device places his or her hand. The platen is usually equipped with a number of pegs (or pins) to guide the placement of the person’s hand and to ensure the accurate measuring of the hand’s geometric structure.
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(2009). Platen. In: Li, S.Z., Jain, A. (eds) Encyclopedia of Biometrics. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-73003-5_484
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DOI: https://doi.org/10.1007/978-0-387-73003-5_484
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