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Patent classifications
G
PHYSICS
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G07
CHECKING-DEVICES
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G07C
TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
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9/00
Individual registration on entry or exit
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G07C9/00174
Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
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G07C9/00563
using personal physical data of the operator, e.g. finger prints, retinal images, voicepatterns
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