The invention relates to an electronically tested high-security coding and decoding device, comprising a key (1) consisting of a mechanically produced code, a body with integrated interpretation and actuation unit (2) and an electronic processing device (3) connected thereto. The key (1) has at least one pressure generator and pressure sensor unit (12) with code-producing pressure elements (121, 122, , 12n) and with one pressure transmitting part each. The interpretation and actuation unit (2) is provided with a unit (22) that converts pressure values known as such to electrical signals, an authorization unit (23) and an execution unit (24). The conversion unit (22) has an input (221) and an output (222). The output (222) is connected to the input (311) of the central processing unit (31). The central processing unit (31) and the interface (32) cooperate to give the electronic processing unit (3). The interface output (322) is connected to the input (232) of the authorization unit (23) whose output (231) is connected to the input (241) of the execution unit (24).
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