| 摘要 |
FIELD: forgery protection and authenticity control of documents. ^ SUBSTANCE: method includes using an indicator in form of two open spirals in form of an evolvent. Also transformation is performed using sensor of generator electromagnetic emission to electric voltage, in the sensor frequency is altered with following comparison to measurement results standing for authentic funds and/or documents. ^ EFFECT: higher protection level. ^ 7 cl, 2 dwg |
