| 摘要 |
An Identification Device (10) for providing validation information comprising: a Token (11) and a Validator (20); wherein the display (17) is adapted to display, during an Operational Phase, a first security code (15), referred to as the Indicator-of-Clearance code or IoC code (15), indicating the Clearance Status (46) of the Token, whereby the first security code (15) is generated by an Indicator-of-Clearance Function (23), such as a digital signature or hash function, programmed on the processor unit (21) based on the Clearance Status (46) and the Validator Clock (28). |
