Beskyttelsesanordning for et elektrisk kretskort, samt anvendelse av anordningen for å beskytte en leseterminal for magnetkort og/eller kort med mikroprosessor

摘要

The present invention relates to a device to protect an electronic card and its use to protect the electronics of a reading terminal of a magnetic and/or microprocessor card. Device to protect a card comprising on a printed circuit an electronic circuit with volatile memory (12) containing programs or information to be protected, characterised in that it comprises a resistive network (21, 22) surrounding the circuit (1) embedded in resin (3), the resistive network (21, 22) being incorporated into an electronic circuit (10) for detecting modifications of the resistance of the network to cause destruction of the information of the volatile memories (12).