A postage metering system for applying indicia including postage value on mail items, the system including: a keyboard for inputting information; a printer for printing indicia; an accounting module for accounting for postage value applied to mail items; and a security module for requiring a user to input an operating code prior to further operation of the system, the security module being configured to compare the input operating code with at least one stored valid operating code, and, where the input operating code and any stored operating code do not match, one or both of log data relating to such use and report such use to a security center.