Security method for chip cards, mobile phones, etc., whereby different levels of security are provided by use of secret access codes or PINs for different levels of sensitive information or functions

摘要

Method for controlling access to information stored on, or functions provided by, a technical device, especially a chip card, mobile phone or similar. Accordingly a first access step involves entry of a first secret access code or PIN, while a second step involves entry of a second secret access code or PIN. The second code can only be entered after successful entry of the first PIN. The first code provides access to a first level of information or functions, while the second code provides access to a second level of information or functions. A hierarchical arrangement of PINs can be created. The invention also relates to a corresponding device and software for method implementation.