Portable data carrier for use in data carrier system, comprises communication unit for contactless data communication with terminal and storage, such that disk-specific parameter is stored in storage to characterize behavior of carrier

摘要

The portable data carrier (1) comprises a disk communication unit (2,2a) for contactless data communication with a terminal (4) and a storage (3a), such that the disk-specific parameter (12) is stored in the storage to characterize the behavior of the data carrier in a contactless data communication with the terminal. The parameter is selected from resonance minimum and/or resonance maximum and/or communication quality factor of the data carrier. An independent claim is included for a method for personalizing portable data carrier.