| 摘要 |
FIELD: information technology. ^ SUBSTANCE: valuable document, transferrable material and a method of verifying such a protective element of the valuable document are also described in the claim. One or more, at most five, magnetic areas and one or more, at most five, empty areas lie along the protective element, for example, along the longitudinal direction thereof. The length of the magnetic areas or empty areas along the protective element is preferably selected such that magnetic signals from neighbouring boundaries of magnetic or empty areas, where there are magnetisation jumps arising when the protective element moves past a magnetosensitive sensor, constructively interfere with each other. ^ EFFECT: simple verification of a protective element. ^ 25 cl, 8 dwg |
