SIMILARITY DECISION METHOD AND SIMILARITY DECISION DEVICE BETWEEN MULTILAYER DIELECTRICS, AND MULTILAYER DIELECTRIC ALLOWING DECISION OF IDENTITY

摘要

PROBLEM TO BE SOLVED: To provide a decision method capable of easily deciding forgery or alternation, in a dielectric material such as a card.

SOLUTION: Signal waveforms detected from a plurality of multilayer dielectrics are compared by use of a pulse electrostatic stress method applying a pulse voltage to the multilayer dielectric comprising a plurality of layers having different dielectric constants, and detecting pulse-like stress generated in the multilayer body at that time, so that similarity between the multilayer dielectrics is decided.

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