G06K 19/18 Constructional details
Introduced: January 1990
Full Title
Full titles differ between systems:
Record carriers for use with machines and with at least a part designed to carry digital markings > characterised by the kind of the digital marking, e.g. shape, nature, code > using markings of different kinds in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means > at least one kind of marking being used for authentication, e.g. of credit or identity cards > Constructional details
Record carriers for use with machines and with at least a part designed to carry digital markings > characterised by the kind of the digital marking, e.g. shape, nature, code > using markings of different kinds in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means > at least one kind of marking being used for authentication, e.g. of credit or identity cards (verification of coded identity or credit cards in mechanisms actuated by them G07F7/12) > Constructional details
No child classifications to compare. This is a leaf node in both IPC and CPC.