| 摘要 |
The invention relates to an anti-counterfeit system for documents provided with a radio-identification device, said device comprising an antenna connected to an electronic chip containing information related to said document, for example biometric data of the holder of an identity document such as a passport, an identification card or a driver's license, said chip being capable of being rendered inoperable, for fraudulent purposes, upon the exposure thereof to microwave radiation for a period of a few seconds; said system is characterized in that one or more units for revealing whether or not the document has been exposed to microwaves are provided on or in said document, each unit comprising: on the one hand, an active substance capable of passing, visibly and irreversibly, from a first stable state to a second stable state, by chemical reaction triggered by microwave radiation, said conversion causing a definitive physical alteration of the document and rendering an attempt to disable said electronic chip by exposing the same to microwave radiation identifiable, and; on the other hand, a catalyzing agent made of conductive materials, designed to render effective and total the conversion reaction of the active substance within the minimum duration of exposure to microwaves required for disabling said electronic chip. The invention applies more specifically to identity documents such as passports, identity cards or driver's licenses. |
