| 摘要 |
An integrated circuit card (10) containing processor and memory is protected against interference to memory or energy supply by sensors (12,13,14) which detect ultra-violet rays, X rays and impedance. The measurements are compared with thresholds (ref1,ref2,ref3) in comparators (15,16,16) and a protective unit (20) is actuated as necessary. An inductive coupling (28,29) provides further protection against battery removal
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