Semiconductor device, card, methods of initializing, checking the authenticity and the identity thereof

Semiconductor device of this invention (11) comprises a circuit of the deactivated cover structure. Provided with a passivated structure local region; and first impedance first protective element (12). Optimized, comprising a protective element (12), methods impedance are different. Semiconductor device (11) further - comprising is used for measuring the first with leads of the measuring device (4) and a first storage element (7A) is the leads value of the first reference value both the first storage element (7A) memory (7). A initialize semiconductor device of this invention claims a method for (11), and a method of leads and first reference value storage. The first reference value a wherein authenticity by leads value of the comparison said multiple once.