DIFF Subgroup
G06K 19/08 using markings of different kinds in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means
Introduced: September 1968
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
Of 2 combined children, 1 exist in both systems.
1 codes are CPC-only extensions.
1 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 1990.
Child Classifications
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- G06K 19/10 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) since 1990 IPC+CPC Available in IPC and CPC