Abstract: A method and system for remotely controlling access to a value unit. The system includes a central control means which includes control data relating to the control of access to one or more value units by associated access controllers. The system includes remote communication means between the central control means and operator control units, and between those units and access controllers. The control data includes an identity structure for the access controller that defines its permissible behaviour, and access control data defining operator control over the access controller. The access controller remains inaccessible until its identity structure is loaded and implemented. The identity structure may be encrypted so that only the central control means and the access controller can decipher it, thus creating a virtual configuration link between the central control means and the access controller via the operator control unit. The operator control unit only has access to the access control data.

Abstract: An electronic system is provided including at least one electronic device and at least one authorisation code generation apparatus including input means (F) for facilitating the input of time information (B) defining one or more time periods during which the electronic device may be actuated through use of an authorisation code (E), a first processing means (G) to receive as an input the time information (B) and generate the authorisation code (E) dependent on the time information (B) and transmission means (H) to directly or indirectly communicate the authorisation code generated by the first processing means (D) to one or more of the electronic devices.