A system for presentation integrity may include an encrypter to encrypt formatting data associated with information content data. The cavity extends to the sacrificial layer and includes a capillary slot protruding into the layer. An off-line processor, which may be the host computer itself, performs the signal processing required to interpret the sample packet. In addition to enhancing mechanical robustness, the resinous encapsulating material acts in some capacity as a barrier to moisture and oxygen during use, which could otherwise reduce the conductivity of the solid electrolyte and increase ESR.