| 摘要 |
Arranged in a plastic housing (11), which is closed on all sides and is provided with a metal shielding (113), are a main data memory (20) for useful data to be protected against unauthorised access, two identification devices (40, 70; 30, 60) and a system of destruction sensors (941, 942, 961-965) with associated switching stages (90-96). The two identification devices control the electrical access to the main data memory (20) by permitting a writing or reading operation only when a preceding identification process, in which identification information is fed in from outside, was positive. The destruction sensors, which are in particular current and pressure sensors laid in the walls of the container, respond to violent opening of the container housing (11) and initiate via a switching stage (90) erasure of the main data memory (20). <IMAGE> |
