In-circuit-emulation of an integrated circuit permits location and identification of optional emulation resources. Embodiments of the invention provide for a substantially constant gain tolerant of changes in supply voltage, ambient temperature, andor manufacturing process. This releasing of the locking mechanism immediately causes the clutch mechanism to engage, so that there is almost no half-clutch state. The policies are used to determine security procedures for the transmission and reception of e-mail messages. For this purpose, the apical end of the mounting part is shaped in order to adapt the external cross-section of the mounting part to the internal cross-section of the post part.