CPC Subgroup
G06K 19/14 the marking being sensed by radiation
Full Title
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) > the marking being sensed by radiation
1 direct subcode
Child Classifications
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