Patent ID: 7508958

Claim:
An IC card access control method for biometrics authentication, in which biometrics characteristic data is detected from a human body and verified against biometrics characteristic data registered in advance in an IC card to perform individual authentication, comprising the steps of: detecting said biometrics characteristic data from said body; verifying, within said IC card, said detected biometrics characteristic data against biometrics characteristic data of a principal registered in advance in the IC card; and permitting access by said IC card to modify data for an authorized agent other than said principal when the result of said verification is satisfactory, wherein said permitting step comprises the steps of: selecting one of register, deletion and change; detecting said biometrics characteristic data from the body of said authorized agent and registering the biometrics characteristic data of said authorized agent in said IC card when said register is selected; deleting from said IC card biometrics characteristic data, registered in said IC card, for a person other than said principal when said deletion is selected; and changing authorization details for the authorized agent other than the principal in said IC card when change is selected.